Business Acquisition [Axis] Business Acquisition [Axis] Within 1 Year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Other current assets, carried at fair value Other Assets, Current, Fair Value Disclosure Other Assets, Current, Fair Value Disclosure Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Security systems Security Systems [Member] Security Systems Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Remaining Aggregate Principal Amount Long-Term Debt, Gross Schedule of Unrealized Loss on Investments Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Non-recourse asset-backed debt Lines of Credit, Fair Value Disclosure Property, Plant and Equipment [Abstract] Marketable securities Investments, Fair Value Disclosure Debt Instrument [Axis] Debt Instrument [Axis] Property, plant and equipment Property, Plant and Equipment, Gross Borrowing Capacity Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Income Tax Disclosure [Abstract] Term Debt Facility 2021-S1 Term Debt Facility 2021 S-1 [Member] Term Debt Facility 2021 S-1 Additional paid-in capital Additional Paid in Capital Inventory valuation adjustments Inventory Adjustments Fair Value Measurement [Domain] Fair Value Measurement [Domain] Financial Instruments [Domain] Financial Instruments [Domain] Revolving Facility 2018-2 Revolving Facility 2018-2 [Member] Revolving Facility 2018-2 Statistical Measurement [Domain] Statistical Measurement [Domain] Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Asset-backed Senior Revolving Credit Facilities Asset Back Senior Credit Facility [Member] Asset Back Senior Credit Facility Net fair value adjustments and loss on sale of mortgage loans held for sale Net Fair Value Adjustments and Gain (Loss) On Sale of Mortgage Loans Held For Sale Net Fair Value Adjustments and Gain (Loss) On Sale of Mortgage Loans Held For Sale Exercise of stock options (in shares) Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Coupon interest Interest Expense, Debt, Excluding Amortization Vesting of restricted stock and restricted stock units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Stated Cash Interest Rate Debt Instrument, Interest Rate, Stated Percentage Proceeds from sales, maturities, redemptions and paydowns of marketable securities Proceeds from Sale and Maturity of Marketable Securities Share-Based Payment Arrangement [Abstract] Fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price Option Indexed to Issuer's Equity [Axis] Option Indexed to Issuer's Equity [Axis] Preferred dividends declared Dividends, Preferred Stock Schedule of Impairment Loss Recognized Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block] NET (LOSS) INCOME NET (LOSS) INCOME Net (loss) income Net Income (Loss) Attributable to Parent Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Total anti-dilutive securities (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount After 1 Year through 5 Years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Basis of Presentation and Principles of Consolidation Basis of Presentation and Principles of Consolidation [Policy Text Block] Basis of Presentation and Principles of Consolidation Subsequent Event Type [Axis] Subsequent Event Type [Axis] Equity Component [Domain] Equity Component [Domain] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Total assets Assets, Fair Value Disclosure Fully committed borrowing capacity Line of Credit Facility Fully Committed Borrowing Capacity Line of Credit Facility Fully Committed Borrowing Capacity Class of Warrant or Right [Line Items] Class of Warrant or Right [Line Items] Payment of loan origination fees and debt issuance costs Payments of Financing Costs Plan Name [Axis] Plan Name [Axis] Fair Value Fair Value Debt Securities, Available-for-Sale RECONCILIATION TO CONDENSED CONSOLIDATED BALANCE SHEETS: Supplemental Cash Flow Information [Abstract] Plan Name [Domain] Plan Name [Domain] Statement of Cash Flows [Abstract] Non-recourse asset-backed debt Long-Term Line of Credit Entity Address, State or Province Entity Address, State or Province Level 1 Fair Value, Inputs, Level 1 [Member] Employee Stock Purchase Plan Employee Stock [Member] Weighted-average remaining contractual term (in years), outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Award Type [Axis] Award Type [Axis] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Mortgages held-for-sale Mortgages Held-for-sale, Fair Value Disclosure Lease liabilities - current portion Operating Lease, Liability, Current Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Other Other Liabilities Calendar year limitation on contributions Share-based Compensation Arrangement By Share-Based Payment Award, Maximum Annual Contributions Share-based Compensation Arrangement By Share-Based Payment Award, Maximum Annual Contributions Estimated unrecognized compensation expense Share-based Compensation Arrangement by Share-based Payment Award, Estimated Unrecognized Compensation Expense Share-based Compensation Arrangement by Share-based Payment Award, Estimated Unrecognized Compensation Expense Net Carrying Amount Long-Term Debt, Excluding Current Maturities Certificates of deposit Certificates of Deposit [Member] Schedule of Cash and Cash Equivalents [Table] Schedule of Cash and Cash Equivalents [Table] Total liabilities Liabilities Liabilities Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Technology Based Intangible Assets Technology-Based Intangible Assets [Member] Zillow Zillow, Inc. [Member] Zillow, Inc. Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Recognized over remaining term of offering period Share-based Compensation Arrangement by Share-based Payment Award, Recognized Over Remaining Term Of Offering Period Share-based Compensation Arrangement by Share-based Payment Award, Recognized Over The Remaining Term Of Offering Period Schedule of Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Reduction in workforce, number of employees (approximately) Restructuring and Related Cost, Number of Positions Eliminated Document Type Document Type Weighted- Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Number of RSUs Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Assets, Fair Value Disclosure [Abstract] Assets, Fair Value Disclosure [Abstract] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Post-employment benefits Severance Costs Capital returns from non-marketable equity securities Proceeds from Equity Method Investment, Distribution, Return of Capital Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value CREDIT FACILITIES AND LONG-TERM DEBT Debt Disclosure [Text Block] Equity securities, marketable securities Equity Securities, FV-NI, Marketable Securities Equity Securities, FV-NI, Marketable Securities Entity Shell Company Entity Shell Company Restricted Cash Restricted Cash [Member] Restricted Cash Term Debt Facility 2021-S3 Term Debt Facility 2021-S3 [Member] Term Debt Facility 2021-S3 Developed technology Developed Technology Rights [Member] Financial Instrument [Axis] Financial Instrument [Axis] Subsequent Event Subsequent Event [Member] Option Indexed to Issuer's Equity, Type [Domain] Option Indexed to Issuer's Equity, Type [Domain] Document Period End Date Document Period End Date TOTAL ASSETS Assets Assets Capped calls strike price (in dollars per share) Option Indexed to Issuer's Equity, Strike Price Debt Disclosure [Abstract] Net (loss) income per share attributable to common shareholders: Earnings Per Share [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Aggregate purchase price for homes Recorded Unconditional Purchase Obligation Antidilutive Securities [Axis] Antidilutive Securities [Axis] Equity securities Equity Securities, FV-NI, Current Origination of mortgage loans held for sale Payments for Origination and Purchases of Loans Held-for-sale Outstanding, current Long-Term Debt, Current Maturities Term Debt Facility 2020-M1 Term Debt Facility 2020-M1 [Member] Term Debt Facility 2020-M1 Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Interest expense Interest Expense, Debt Fair Value Disclosure of Asset and Liability Not Measured at Fair Value Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table Text Block] Multiple Term Loan Facilities Multiple Term Loan Facilities [Member] Multiple Term Loan Facilities Line of Credit Line of Credit [Member] Asset-backed securities Asset-Backed Securities [Member] Work in progress Inventory, Real Estate, Construction in Process (LOSS) INCOME BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest NET (LOSS) INCOME PER SHARE Earnings Per Share [Text Block] Summary of Assumptions Used in the Black-Scholes Model for Employee and Non-Employee Stock Options Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Award Type [Domain] Award Type [Domain] Warrants to purchase shares (in shares) Class of Warrant or Right, Number of Securities Called by Warrants or Rights Unamortized stock-based compensation period (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Unrealized Losses, Total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss GAIN ON EXTINGUISHMENT OF DEBT Gain on extinguishment of debt Gain on extinguishment of debt Gain (Loss) on Extinguishment of Debt Weighted-average remaining contractual term (in years), exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Schedule of Finite-Lived Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Proceeds from issuance of common stock for ESPP Proceeds from Stock Plans Computers Computer Equipment [Member] GROSS PROFIT Gross Profit Entity Registrant Name Entity Registrant Name Repurchased face amount Debt Instrument, Repurchased Face Amount Description of Business Business Description [Policy Text Block] Business Description SUBSEQUENT EVENTS Subsequent Events [Text Block] NON-RECOURSE ASSET-BACKED DEBT – Net of current portion Long-Term Line of Credit, Noncurrent Expected dividend Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Internally developed software Software Development [Member] TaxProper TaxProper [Member] TaxProper Customer relationships Customer Relationships [Member] Entity Address, City or Town Entity Address, City or Town OPERATING EXPENSES: Operating Expenses [Abstract] Minimum Minimum [Member] Conversion Rate Debt Instrument, Convertible, Conversion Ratio Restricted cash Restricted cash Restricted Cash and Cash Equivalents, Current Statement of Financial Position [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Proceeds from other secured borrowings Proceeds from Issuance of Secured Debt Inventory valuation adjustment Inventory Write-down Unamortized Debt Issuance Costs Deferred issuance costs Debt Issuance Costs, Net Commitments and Contingencies Disclosure [Abstract] Market Condition Award Market Condition Award [Member] Market Condition Award FAIR VALUE DISCLOSURES Fair Value Disclosures [Text Block] Trading Symbol Trading Symbol Entity File Number Entity File Number Total cost basis Cash, Cash Equivalents And Marketable Securities, Amortized Cost Cash, Cash Equivalents And Marketable Securities, Amortized Cost Equity securities, cash and cash equivalents Equity Securities, FV-NI, Cash And Cash Equivalents Equity Securities, FV-NI, Cash And Cash Equivalents Technology and development Research and Development Expense Interest payable Interest Payable, Current Number of awards with satisfied market conditions Share-based Payment Arrangement, Number Of Awards With Satisfied Market Conditions Share-based Payment Arrangement, Number Of Awards With Satisfied Market Conditions VARIABLE INTEREST ENTITIES Variable Interest Entity Disclosure [Text Block] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period RSUs Restricted Stock Units (RSUs) [Member] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Number of shares authorized to be purchased by warrant agreement (in shares) Class Of Warrant Or Right, Number Of Securities Called By Warrants Or Rights, Authorized Class Of Warrant Or Right, Number Of Securities Called By Warrants Or Rights, Authorized Significant Risks and Uncertainties Significant Risks and Uncertainties [Policy Text Block] Significant Risks and Uncertainties Real estate inventory, net Total real estate inventory Real estate inventory, net Inventory, Real Estate Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure BUSINESS ACQUISITION Business Combination Disclosure [Text Block] OTHER COMPREHENSIVE INCOME (LOSS): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Fair Value Option, Disclosures [Table] Fair Value Option, Disclosures [Table] Subsequent Events [Abstract] Fee amount Debt Instrument, Fee Amount Accounts payable and other accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Real estate inventory Increase (Decrease) in Mortgage Loans Held-for-sale INCOME TAXES Income Tax Disclosure [Text Block] Weighted average interest rate (in percent) Debt, Weighted Average Interest Rate Payment for early extinguishment of debt Payment for Debt Extinguishment or Debt Prepayment Cost Credit Facility [Domain] Credit Facility [Domain] Fair Value, 12 Months or Greater Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Amortization expense of intangible assets Amortization of Intangible Assets Exercise price of warrants (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION – Cash paid during the period for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Basic (in dollars per share) Basic net loss per share (in dollars per share) Earnings Per Share, Basic Repurchase of convertible senior notes Repurchase of convertible senior notes Repayments of Convertible Debt Counterparty Name [Domain] Counterparty Name [Domain] Sales, marketing and operations Selling and Marketing Expense Total shareholders’ equity Beginning balance Ending balance Stockholders' Equity Attributable to Parent Multiple Senior Revolving Credit Facilities Multiple Senior Revolving Credit Facilities [Member] Multiple Senior Revolving Credit Facilities Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Entity Interactive Data Current Entity Interactive Data Current Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Asset Back Senior Credit Facility and Mezzanine Term Debt Facilities Asset Back Senior Credit Facility And Mezzanine Term Debt Facilities [Member] Asset Back Senior Credit Facility And Mezzanine Term Debt Facilities Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Senior Convertible Notes 2026 Senior Convertible Notes 2026 [Member] Senior Convertible Notes 2026 Money market funds Money Market Funds [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Accumulated Deficit Retained Earnings [Member] Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Common Stock Common Stock [Member] Summary of Stock-Based Compensation Expense in the Statements of Operations Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Statement [Table] Statement [Table] Debt instrument, term, withdrawal period, maximum Debt Instrument, Term, Withdrawal Period, Maximum Debt Instrument, Term, Withdrawal Period, Maximum m Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Effective Interest Rate Debt Instrument, Interest Rate, Effective Percentage Document Quarterly Report Document Quarterly Report Furniture and fixtures Furniture and Fixtures [Member] Finished goods: Finished Goods [Abstract] Finished Goods CURRENT ASSETS: Assets, Current [Abstract] LEASE LIABILITIES – Net of current portion Operating Lease, Liability, Noncurrent Statistical Measurement [Axis] Statistical Measurement [Axis] Leasehold improvements Leasehold Improvements [Member] Payroll deductions Share-Based Compensation Arrangement by Share-Based Payment Award, Discount from Market Price, Offering Date Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated Other Comprehensive Loss AOCI Including Portion Attributable to Noncontrolling Interest [Member] Purchase of marketable securities Payments to Acquire Marketable Securities Convertible senior notes Convertible Debt, Fair Value Disclosures Equity Components [Axis] Equity Components [Axis] Trademarks Trademarks [Member] Fair Value, Recurring Fair Value, Recurring [Member] Exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Expired (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Fair Value, Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Document Fiscal Year Focus Document Fiscal Year Focus CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Statement [Line Items] Statement [Line Items] Accounts payable and other accrued liabilities Accounts Payable and Other Accrued Liabilities, Current Beginning balance (in shares) Ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Indefinite-lived Intangible Assets [Line Items] Indefinite-Lived Intangible Assets [Line Items] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax RIGHT OF USE ASSETS Operating Lease, Right-of-Use Asset Impairment of Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Document Transition Report Document Transition Report Local Phone Number Local Phone Number Summary of the Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] (LOSS) INCOME FROM OPERATIONS Operating Income (Loss) Outstanding amount, current Long-Term Debt, Gross, Current Long-Term Debt, Gross, Current Non-marketable equity securities Equity Securities without Readily Determinable Fair Value, Amount Common stock outstanding (in dollars per shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding GOODWILL Goodwill Goodwill Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Issuance Costs Debt Issuance Costs, Current, Net Adjustments to reconcile net (loss) income to cash, cash equivalents, and restricted cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] GOODWILL AND INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] INCOME TAX EXPENSE Income tax provision Income Tax Expense (Benefit) Income Statement [Abstract] Impairment of long-lived assets held-for-use Impairment, Long-Lived Asset, Held-for-Use Additional Paid-in Capital Additional Paid-in Capital [Member] Document Fiscal Period Focus Document Fiscal Period Focus Basic and diluted net (loss) income per share: Earnings Per Share, Basic [Abstract] Diluted (in shares) Weighted average shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Schedule of Real Estate Inventory Schedule of Inventory, Current [Table Text Block] Expected life (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Equity method investments Equity Securities, FV-NI CONVERTIBLE SENIOR NOTES Convertible Debt, Noncurrent Schedule of Available-For-Sale Securities Reconciliation Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Marketable Securities Marketable Securities Common stock, $0.0001 par value; 3,000,000,000 shares authorized; 647,607,920 and 637,387,025 shares issued, respectively; 647,607,920 and 637,387,025 shares outstanding, respectively Common Stock, Value, Issued Reported Value Measurement Reported Value Measurement [Member] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Conversion price (in dollars per share) Debt Instrument, Convertible, Conversion Price Schedule of Antidilutive Securities Excluded from Computation of (Loss) Income Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Convertible Debt Convertible Debt [Member] Exercisable, aggregate intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Number of shares allowed per employee, per offering period (in shares) Number Of Shares Allowed Per Employee, Per Offering Period Number Of Shares Allowed Per Employee, Per Offering Period Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] CASH, CASH EQUIVALENTS, AND RESTRICTED CASH – Beginning of period CASH, CASH EQUIVALENTS, AND RESTRICTED CASH – End of period Cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] CURRENT LIABILITIES: Liabilities, Current [Abstract] Net loss attributable to common shareholders -basic Net Income (Loss) Available to Common Stockholders, Basic Proceeds from exercise of stock options Proceeds from Stock Options Exercised Common stock issued (in dollars per shares) Common Stock, Shares, Issued Total fair value Cash, Cash Equivalents And Marketable Securities Cash, Cash Equivalents And Marketable Securities Income Statement Location [Domain] Income Statement Location [Domain] Fair Value, Total Debt Securities, Available-for-Sale, Unrealized Loss Position Amendment Flag Amendment Flag Remaining Weighted Average Useful Life (Years) Remaining weighted average useful life (years) Finite-Lived Intangible Asset, Useful Life Listed for sale Inventory, Real Estate, Held-for-sale Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Principal amount Debt Instrument, Face Amount Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Proceeds from non-recourse asset-backed debt Proceeds from Long-Term Lines of Credit Employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan COMPREHENSIVE (LOSS) INCOME Comprehensive Income (Loss), Net of Tax, Attributable to Parent Goodwill acquisition cost Goodwill, Acquired During Period Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Entity Current Reporting Status Entity Current Reporting Status Repurchased 2026 Notes Repurchased 2026 Notes [Member] Repurchased 2026 Notes Goodwill and Intangible Assets Disclosure [Abstract] OTHER ASSETS Other Assets, Noncurrent Weighted-Average Remaining Contractual Term (in years) and Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Depreciation and amortization expense Depreciation, Depletion and Amortization Employee Stock Purchase Plan Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan Employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Counterparty Name [Axis] Counterparty Name [Axis] Beginning balance (in shares) Ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Escrow receivable Increase (Decrease) In Escrow Receivable Increase (Decrease) In Escrow Receivable Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Statement of Other Comprehensive Income [Abstract] Acquired intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Inducement Plan Two Thousand Twenty-Two Inducement Plan [Member] Two Thousand Twenty-Two Inducement Plan Liabilities Liabilities: Liabilities [Abstract] PROPERTY AND EQUIPMENT – Net Property and equipment – net Property, Plant and Equipment, Net Cash and Cash Equivalents [Abstract] Depreciation and amortization  Depreciation, Amortization and Accretion, Net Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Office equipment Office Equipment [Member] Sales, marketing and operations Selling and Marketing Expense [Member] Options Share-Based Payment Arrangement, Option [Member] Revolving Facility 2018-3 Revolving Facility 2018-3 [Member] Revolving Facility 2018-3 Volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Under contract for sale Inventory, Real Estate, In Resale Contract Inventory, Real Estate, In Resale Contract Dividends declared Dividends Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Net Carrying Amount Long-Term Debt OTHER INCOME (LOSS) – Net Other Nonoperating Income (Expense) Common stock authorized (in shares) Common Stock, Shares Authorized Weighted-average shares outstanding: Weighted-Average Shares Outstanding [Abstract] Weighted-Average Shares Outstanding Revolving Facility 2022-1 Revolving Facility 2022-1 [Member] Revolving Facility 2022-1 Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Total operating expenses Operating Expenses Maximum Maximum [Member] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Other current assets: Other Assets [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Total current assets Assets, Current Business Acquisition [Line Items] Business Acquisition [Line Items] Entity Small Business Entity Small Business Measurement Basis [Axis] Measurement Basis [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] WARRANTS Stockholders' Equity Note Disclosure [Text Block] Amortization of right of use asset Operating Lease, Right-of-Use Asset, Amortization Expense Net Carrying Amount Finite-Lived Intangible Assets, Net Restricted cash Restricted Cash Unamortized stock-based compensation Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Number of shares allowed per purchase period, per offering period (in shares) Number Of Shares Allowed Per Purchase Period, Per Offering Period Number Of Shares Allowed Per Purchase Period, Per Offering Period Number of Options (in thousands) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] PROPERTY AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Number of homes under contract to be purchased Recorded Unconditional Purchase Obligation, Minimum Quantity Required Aggregate intrinsic values Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Title of 12(b) Security Title of 12(b) Security Debt securities, available-for-sale, marketable securities Debt Securities, Available-for-sale, Marketable Securities Debt Securities, Available-for-sale, Marketable Securities Consolidated Entities [Axis] Consolidated Entities [Axis] Subsequent Event [Line Items] Subsequent Event [Line Items] Debt Instrument [Line Items] Debt Instrument [Line Items] Business Combination and Asset Acquisition [Abstract] Class of Warrant or Right [Table] Class of Warrant or Right [Table] Unrealized Losses, Less than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Employee payroll contributions with held Share-based Compensation Arrangement by Share-based Payment Award, Employee Payroll Contributions With Held Share-based Compensation Arrangement by Share-based Payment Award, Employee Payroll Contributions With Held Unrealized Losses 12 Months or Greater Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Term Debt Facility 2021-S2 Term Debt Facility 2021-S2 [Member] Term Debt Facility 2021-S2 LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Cost Basis Debt Securities, Available-for-Sale, Amortized Cost CASH, CASH EQUIVALENTS, AND INVESTMENTS Cash, Cash Equivalents, and Marketable Securities [Text Block] Other assets Increase (Decrease) in Other Operating Assets Scheduled Contractual Maturities of Marketable Securities Investments Classified by Contractual Maturity Date [Table Text Block] Incentive Stock Options Incentive Stock Options [Member] Incentive Stock Options Entity Filer Category Entity Filer Category Basic (in shares) Weighted average shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Cash and Cash Equivalents Marketable Securities, Cash And Cash Equivalents Marketable Securities, Cash And Cash Equivalents Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Share-based compensation expense Stock-based compensation expense Share-Based Payment Arrangement, Expense DISCLOSURES OF NONCASH ACTIVITIES: Noncash Investing and Financing Items [Abstract] COMMITMENTS AND CONTINGENCIES (See Note 14) Commitments and Contingencies Security Exchange Name Security Exchange Name Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Schedule of Non- Marketable Equity Securities and Equity Method Investment Marketable Securities And Equity Securities Without Readily Determinable Fair Value [Table Text Block] Marketable Securities And Equity Securities Without Readily Determinable Fair Value Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Interest payable Increase (Decrease) in Interest Payable, Net Restricted Shares Restricted Stock [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] General and administrative General and Administrative Expense [Member] REVENUE Revenue from Contract with Customer, Excluding Assessed Tax Common stock reserved for issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Term Debt Facility 2022-S2 Term Debt Facility 2022-S2 [Member] Term Debt Facility 2022-S2 Cover [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Shareholder ownership percentage threshold, extended exercisable term Shareholder Ownership Percentage Threshold, Extended Exercisable Term Shareholder Ownership Percentage Threshold, Extended Exercisable Term Goodwill, impairment loss Goodwill, Impairment Loss SHARE-BASED AWARDS Share-Based Payment Arrangement [Text Block] Other Other Assets Debt securities, available-for-sale, cash and cash equivalents Debt Securities, Available-for-sale, Cash And Cash Equivalents Debt Securities, Available-for-sale, Cash And Cash Equivalents Call Option Call Option [Member] Unvested Stock Options and Restricted Shares Unvested Stock Options and Restricted Shares [Member] Unvested Stock Options and Restricted Shares TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity Term Debt Instrument, Term Amortization of debt issuance costs Amortization of Debt Issuance Costs Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Principal payments on non-recourse asset-backed debt Repayments of Long-Term Lines of Credit Revolving Facility 2019-1 Revolving Facility 2019-1 [Member] Revolving Facility 2019-1 Organization, Consolidation and Presentation of Financial Statements [Abstract] Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration] Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Level 2 Fair Value, Inputs, Level 2 [Member] Convertible Senior Notes Debt, Policy [Policy Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Valuation adjustments Inventory, Real Estate, Valuation Adjustment (Decrease) Increase) Inventory, Real Estate, Valuation Adjustment (Decrease) Increase) Marketable securities Marketable Securities, Current Net loss attributable to common shareholders – diluted Net Income (Loss) Available to Common Stockholders, Diluted Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Diluted (in dollars per share) Diluted net (loss) income per share (in dollars per share) Earnings Per Share, Diluted INTANGIBLES – Net Intangible Assets, Net (Excluding Goodwill) Term Debt Facility 2022-M1 Term Debt Facility 2022-M1 [Member] Term Debt Facility 2022-M1 Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Total current liabilities Liabilities, Current Risk-free rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Other current assets ($0 and $1 carried at fair value) Other current assets Other Assets, Current Total Equity Securities, FV-NI and without Readily Determinable Fair Value Equity securities Equity Securities [Member] Summary of the RSU Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Revolving Facility 2019-2 Revolving Facility 2019-2 [Member] Revolving Facility 2019-2 Expiration period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Corporate debt securities Corporate Debt Securities [Member] Risk-free rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Recognized unrealized gain (loss) related to equity securities still held Equity Securities, FV-NI, Unrealized Gain (Loss) Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, Address Line One Entity Address, Address Line One COST OF REVENUE Cost of Revenue Stock-based compensation expense capitalized for internally developed software Share-Based Payment Arrangement, Amount Capitalized Fair Value Disclosures [Abstract] INTEREST EXPENSE Interest Expense Credit Facility [Axis] Credit Facility [Axis] Unrealized gain (loss) on marketable securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Changes in fair value of equity securities Marketable Securities, Unrealized Gain (Loss) Revolving Facility 2019-3 Revolving Facility 2019-3 [Member] Revolving Facility 2019-3 REAL ESTATE INVENTORY Inventory Disclosure [Text Block] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Schedule of Long-term Debt Instruments Schedule of Long-Term Debt Instruments [Table Text Block] SHAREHOLDERS’ EQUITY: Equity [Abstract] Subsequent Event [Table] Subsequent Event [Table] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Inventory Disclosure [Abstract] Entity Tax Identification Number Entity Tax Identification Number Common stock discount on shares purchase price Share-Based Compensation Arrangement by Share-Based Payment Award, Discount from Market Price, Purchase Date Outstanding amount, noncurrent Long-Term Debt, Gross, Noncurrent Long-Term Debt, Gross, Noncurrent Purchase of non-marketable equity securities Payments to Acquire Equity Securities, FV-NI Remainder of 2023 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Marketable securities: Marketable Securities [Abstract] Cash Cash [Member] Consolidated Entities [Domain] Consolidated Entities [Domain] Asset-backed Mezzanine Term Debt Facilities Mezzanine Term Debt Facilities [Member] Mezzanine Term Debt Facilities Volume-weighted average price, days Class Of Warrant Or Right, Exercise Price, Volume-weighted Average Price, Days Class Of Warrant Or Right, Exercise Price, Volume-weighted Average Price, Days NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Entity Central Index Key Entity Central Index Key Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Principal payments on other secured borrowings Repayments of Secured Debt Measurement Frequency [Axis] Measurement Frequency [Axis] Weighted- Average Grant-Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Other Restricted Assets Other Restricted Assets Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Total PIPE shares investment Business Combination, Consideration Transferred Fully committed borrowing capacity, maximum Line Of Credit Facility, Fully Committed Maximum Borrowing Capacity Line Of Credit Facility, Fully Committed Maximum Borrowing Capacity Concentrations of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] City Area Code City Area Code General and administrative General and Administrative Expense ASSETS Assets: Assets [Abstract] Capped calls cap price (in dollars per share) Option Indexed to Issuer's Equity, Cap Price Option Indexed to Issuer's Equity, Cap Price Issuance Costs Debt Issuance Costs, Noncurrent, Net Marketing Warrants Marketing Warrants [Member] Marketing Warrants Capped calls cap price premium Option Indexed to Issuer's Equity, Cap Price Premium Option Indexed to Issuer's Equity, Cap Price Premium Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Proceeds from sale and principal collections of mortgage loans held for sale Proceeds from Sale and Collection of Loans Held-for-sale Statement of Stockholders' Equity [Abstract] Non-recourse asset-backed debt - current portion Line of Credit, Current Fair Value Measurement Methodologies Fair Value Disclosures [Table Text Block] Fair Value Disclosures CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] DESCRIPTION OF BUSINESS AND ACCOUNTING POLICIES Business Description and Accounting Policies [Text Block] Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Term Debt Facility 2022-S1 Term Debt Facility 2022-S1 [Member] Term Debt Facility 2022-S1 Lease liabilities Increase (Decrease) In Lease Liabilities Increase (Decrease) In Lease Liabilities Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Technology and development Research and Development Expense [Member] Escrow receivable Escrow Deposit Capped calls cost Option Indexed to Issuer's Equity, Cost Option Indexed to Issuer's Equity, Cost Software implementation costs Software Implementation Costs [Member] Software Implementation Costs 2024 Finite-Lived Intangible Asset, Expected Amortization, Year One Schedule of (Loss) Income Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value, Option, Quantitative Disclosures [Line Items] Convertible Debt Convertible Debt [Table Text Block] Reduction in workforce, percent of employees (approximately) Restructuring and Related Cost, Number of Positions Eliminated, Period Percent