$RDFN
Redfin Corp Stock $rdfn

$rdfn Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-Q Financial Statement

#000138282121000314 Filed on November 04, 2021

Income Statement

Concept	2021 Q4	2021 Q3	2020 Q4
Revenue	$643.1M	$540.1M	$244.5M
YoY Change	163.01%	127.96%	4.85%
Cost Of Revenue	$535.0M	$412.8M	$164.4M
YoY Change	225.43%	186.96%	-15.08%
Gross Profit	$108.0M	$127.3M	$80.10M
YoY Change	34.89%	36.78%	102.27%
Gross Profit Margin	16.8%	23.57%	32.76%
Selling, General & Admin	$133.3M	$103.5M	$54.50M
YoY Change	144.5%	208.05%	17.46%
% of Gross Profit	123.33%	81.33%	68.04%
Research & Development		$43.66M
YoY Change		94.45%
% of Gross Profit		34.29%
Depreciation & Amortization	$14.60M	$5.399M	$3.980M
YoY Change	266.91%	50.22%	39.16%
% of Gross Profit	13.52%	4.24%	4.97%
Operating Expenses	$133.3M	$147.2M	$54.50M
YoY Change	144.5%	162.55%	17.46%
Operating Profit	-$25.21M	-$19.89M	$25.60M
YoY Change	-198.47%	-153.75%	-476.47%
Interest Expense	-$3.799M	$3.672M	-$11.60M
YoY Change	-67.25%	45.6%	1060.0%
% of Operating Profit			-45.31%
Other Income/Expense, Net	$1.261M	$4.128M	$0.00
YoY Change		-745.0%	-100.0%
Pretax Income	-$27.75M	-$19.26M	$14.00M
YoY Change	-298.19%	-156.32%	-279.49%
Income Tax	-$744.0K	-$311.0K
% Of Pretax Income
Net Earnings	-$27.00M	-$18.95M	$14.00M
YoY Change	-292.87%	-155.46%	-279.49%
Net Earnings / Revenue	-4.2%	-3.51%	5.73%
Basic Earnings Per Share		-$0.20
Diluted Earnings Per Share	-$255.3K	-$0.20	$137.0K
COMMON SHARES
Basic Shares Outstanding	105.5M shares	105.1M shares	102.3M shares
Diluted Shares Outstanding		105.1M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$624.7M	$591.3M	$1.057B
YoY Change	-40.88%	17.93%	246.82%
Cash & Equivalents	$591.0M	$562.7M	$925.3M
Short-Term Investments	$33.74M	$28.58M	$131.6M
Other Short-Term Assets	$7.524M	$8.537M	$4.898M
YoY Change	53.61%	64.52%	40.1%
Inventory	$358.2M	$435.1M	$49.16M
Prepaid Expenses	$22.95M	$19.16M	$12.13M
Receivables	$69.59M	$91.93M	$54.72M
Other Receivables	$0.00	$0.00	$42.60M
Total Short-Term Assets	$1.246B	$1.263B	$1.241B
YoY Change	0.42%	97.81%	174.77%
LONG-TERM ASSETS
Property, Plant & Equipment	$58.67M	$55.54M	$43.99M
YoY Change	33.38%	31.57%	11.15%
Goodwill	$409.4M	$407.2M	$9.186M
YoY Change	4356.59%		0.0%
Intangibles	$185.9M	$194.9M	$1.830M
YoY Change	10060.05%		-84.09%
Long-Term Investments	$54.83M	$53.49M	$11.90M
YoY Change	360.74%	212.8%	-61.61%
Other Assets	$12.90M	$13.13M	$8.619M
YoY Change	49.65%	49.6%	-18.36%
Total Long-Term Assets	$775.9M	$780.0M	$119.7M
YoY Change	548.24%	526.06%	-17.24%
TOTAL ASSETS
Total Short-Term Assets	$1.246B	$1.263B	$1.241B
Total Long-Term Assets	$775.9M	$780.0M	$119.7M
Total Assets	$2.022B	$2.043B	$1.361B
YoY Change	48.62%	167.72%	128.19%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$12.55M	$10.08M	$5.644M
YoY Change	122.29%	198.52%	165.98%
Accrued Expenses	$118.1M	$102.0M	$69.46M
YoY Change	70.06%	77.39%	82.68%
Deferred Revenue
YoY Change
Short-Term Debt	$232.8M	$239.5M	$63.00M
YoY Change	269.56%	333.79%	145.14%
Long-Term Debt Due	$23.28M	$23.24M	$22.50M
YoY Change	3.47%	-81.33%
Total Short-Term Liabilities	$401.8M	$406.4M	$185.7M
YoY Change	116.35%	54.6%	118.03%
LONG-TERM LIABILITIES
Long-Term Debt	$1.214B	$1.213B	$488.3M
YoY Change	148.62%		307.94%
Other Long-Term Liabilities	$55.22M	$57.76M	$49.30M
YoY Change	12.01%	11.94%	-17.7%
Total Long-Term Liabilities	$1.269B	$1.271B	$537.6M
YoY Change	136.09%	2362.26%	199.33%
TOTAL LIABILITIES
Total Short-Term Liabilities	$401.8M	$406.4M	$185.7M
Total Long-Term Liabilities	$1.269B	$1.271B	$537.6M
Total Liabilities	$1.672B	$1.686B	$730.1M
YoY Change	129.03%	421.6%	175.77%
SHAREHOLDERS EQUITY
Retained Earnings	-$372.2M	-$345.2M	-$270.3M
YoY Change	37.68%	21.39%	7.36%
Common Stock	$106.0K	$105.0K	$103.0K
YoY Change	2.91%	5.0%	10.75%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$309.9M	$317.9M	$590.6M
YoY Change
Total Liabilities & Shareholders Equity	$2.022B	$2.043B	$1.361B
YoY Change	48.62%	167.72%	128.19%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2020 Q4
OPERATING ACTIVITIES
Net Income	-$27.00M	-$18.95M	$14.00M
YoY Change	-292.87%	-155.46%	-279.49%
Depreciation, Depletion And Amortization	$14.60M	$5.399M	$3.980M
YoY Change	266.91%	50.22%	39.16%
Cash From Operating Activities	$112.6M	-$200.5M	$9.730M
YoY Change	1056.76%	-568.42%	-61.13%
INVESTING ACTIVITIES
Capital Expenditures	-$6.917M	-$6.995M	-$4.300M
YoY Change	60.86%	61.92%	58.67%
Acquisitions
YoY Change
Other Investing Activities	-$6.527M	-$11.79M	$3.330M
YoY Change	-296.01%	1968.25%	-1613.64%
Cash From Investing Activities	-$13.44M	-$18.78M	-$970.0K
YoY Change	1285.98%	284.13%	-66.89%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-18.07M	68.83M	549.1M
YoY Change	-103.29%	-761.87%	8857.26%
NET CHANGE
Cash From Operating Activities	112.6M	-200.5M	9.730M
Cash From Investing Activities	-13.44M	-18.78M	-970.0K
Cash From Financing Activities	-18.07M	68.83M	549.1M
Net Change In Cash	81.04M	-150.4M	557.8M
YoY Change	-85.47%	-646.83%	1876.05%
FREE CASH FLOW
Cash From Operating Activities	$112.6M	-$200.5M	$9.730M
Capital Expenditures	-$6.917M	-$6.995M	-$4.300M
Free Cash Flow	$119.5M	-$193.5M	$14.03M
YoY Change	751.53%	-510.63%	-49.42%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001382821
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	74-3064240
	dei	Entity Address Address Line1 EntityAddressAddressLine1	1099 Stewart Street
	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 600
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-38160
	dei	Entity Registrant Name EntityRegistrantName	Redfin Corporation
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Address City Or Town EntityAddressCityOrTown	Seattle
	dei	Entity Address State Or Province EntityAddressStateOrProvince	WA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	98101
	dei	City Area Code CityAreaCode	(206)
	dei	Local Phone Number LocalPhoneNumber	576-8333
	dei	Security12b Title Security12bTitle	Common Stock, $0.001 par value per share
	dei	Trading Symbol TradingSymbol	RDFN
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2021Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	105481348	shares
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	562714000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	925276000	USD
CY2021Q3	us-gaap	Restricted Cash RestrictedCash	74532000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	20544000	USD
CY2021Q3	us-gaap	Short Term Investments ShortTermInvestments	28578000	USD
CY2020Q4	us-gaap	Short Term Investments ShortTermInvestments	131561000	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	933000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	160000	USD
CY2020Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	12131000	USD
CY2021Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	91932000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	54719000	USD
CY2021Q3	us-gaap	Inventory Net InventoryNet	435144000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	49158000	USD
CY2021Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	42762000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	42539000	USD
CY2021Q3	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	19155000	USD
CY2021Q3	us-gaap	Other Assets Current OtherAssetsCurrent	8537000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	4898000	USD
CY2021Q3	us-gaap	Assets Current AssetsCurrent	1263354000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	1240826000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	55535000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	43988000	USD
CY2021Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	55757000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	44149000	USD
CY2021Q3	us-gaap	Long Term Investments LongTermInvestments	53488000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	11922000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	407228000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	9186000	USD
CY2021Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	194856000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1830000	USD
CY2021Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	13129000	USD
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CY2021Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	102027000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	69460000	USD
CY2021Q3	rdfn	Other Payables Current OtherPayablesCurrent	16766000	USD
CY2020Q4	rdfn	Other Payables Current OtherPayablesCurrent	13184000	USD
CY2021Q3	us-gaap	Warehouse Agreement Borrowings WarehouseAgreementBorrowings	39825000	USD
CY2020Q4	us-gaap	Warehouse Agreement Borrowings WarehouseAgreementBorrowings	39029000	USD
CY2021Q3	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	199627000	USD
CY2020Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	23949000	USD
CY2021Q3	us-gaap	Convertible Debt Current ConvertibleDebtCurrent	23243000	USD
CY2020Q4	us-gaap	Convertible Debt Current ConvertibleDebtCurrent	22482000	USD
CY2021Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	14793000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	11973000	USD
CY2021Q3	us-gaap	Liabilities Current LiabilitiesCurrent	406356000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	185721000	USD
CY2021Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	57759000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	49339000	USD
CY2021Q3	us-gaap	Convertible Debt Noncurrent ConvertibleDebtNoncurrent	1212767000	USD
CY2020Q4	us-gaap	Convertible Debt Noncurrent ConvertibleDebtNoncurrent	488268000	USD
CY2021Q3	rdfn	Accrued Payroll Taxes Noncurrent AccruedPayrollTaxesNoncurrent	7841000	USD
CY2020Q4	rdfn	Accrued Payroll Taxes Noncurrent AccruedPayrollTaxesNoncurrent	6812000	USD
CY2020Q4	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	10000000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	99840144	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	104327614	shares
CY2021Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	883000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	0	USD
CY2021Q3	us-gaap	Liabilities Liabilities	1685606000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	730140000	USD
CY2021Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.001
CY2021Q3	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.001
CY2021Q3	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	10000000	shares
CY2020Q4	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	40000	shares
CY2021Q3	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	40000	shares
CY2021Q3	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	40000	shares
CY2020Q4	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	40000	shares
CY2021Q3	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	39857000	USD
CY2020Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	39823000	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2021Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2021Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2021Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	105375935	shares
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	105375935	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	103000594	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	103000594	shares
CY2021Q3	us-gaap	Common Stock Value CommonStockValue	105000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	103000	USD
CY2021Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	662894000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	860556000	USD
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	47000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	211000	USD
CY2021Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-345162000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-270313000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	317884000	USD
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CY2021Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2043347000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1360520000	USD
CY2021Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	540074000	USD
CY2021Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	540074000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	236916000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	236916000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1279708000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	641576000	USD
CY2021Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	412772000	USD
CY2020Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	143844000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	983912000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	489586000	USD
CY2021Q3	us-gaap	Operating Expenses OperatingExpenses	147196000	USD
CY2021Q3	us-gaap	Gross Profit GrossProfit	127302000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	93072000	USD
	us-gaap	Gross Profit GrossProfit	295796000	USD
	us-gaap	Gross Profit GrossProfit	151990000	USD
CY2021Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	43658000	USD
CY2020Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	22452000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	112824000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	60687000	USD
CY2021Q3	us-gaap	Marketing Expense MarketingExpense	49143000	USD
CY2020Q3	us-gaap	Marketing Expense MarketingExpense	12421000	USD
	us-gaap	Marketing Expense MarketingExpense	116343000	USD
	us-gaap	Marketing Expense MarketingExpense	47611000	USD
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	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	151352000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	68539000	USD
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	us-gaap	Operating Expenses OperatingExpenses	380519000	USD
	us-gaap	Operating Expenses OperatingExpenses	176837000	USD
CY2021Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-19894000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	37009000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-84723000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-24847000	USD
CY2021Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	178000	USD
CY2020Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	319000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	472000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	1859000	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	3672000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	2522000	USD
	us-gaap	Interest Expense InterestExpense	7822000	USD
	us-gaap	Interest Expense InterestExpense	7631000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-311000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-5363000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2021Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4128000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-640000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4099000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1943000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-18949000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	34166000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-82611000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-82611000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-32562000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-32562000	USD
CY2021Q3	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	1662000	USD
CY2020Q3	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	1530000	USD
	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	5875000	USD
	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	2814000	USD
CY2021Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	0	USD
CY2020Q3	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	653000	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	0	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	0	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-20611000	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-20611000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	31983000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	31983000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-88486000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-88486000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-35376000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-35376000	USD
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.20
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.85
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.36
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	105144872	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	97365122	shares
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.20
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.85
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.36
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	105144872	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	107607711	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	104327614	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	97365122	shares
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-18949000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	34166000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-82611000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-32562000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	3000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	6000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	3000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-16000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	27000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-139000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	161000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	282000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-18919000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	34033000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-82447000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-32296000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-82611000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-82611000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-32562000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-32562000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	32303000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	10581000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	39438000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	25764000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	3583000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	5254000	USD
	rdfn	Operating Lease Non Cash Lease Expense OperatingLeaseNonCashLeaseExpense	8510000	USD
	rdfn	Operating Lease Non Cash Lease Expense OperatingLeaseNonCashLeaseExpense	6821000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2063000	USD
	rdfn	Gain Loss On Interest Rate Lock Commitments Forward Sales Commitments And Fair Value Adjustment Of Loans Held For Sale GainLossOnInterestRateLockCommitmentsForwardSalesCommitmentsAndFairValueAdjustmentOfLoansHeldForSale	342000	USD
	rdfn	Gain Loss On Interest Rate Lock Commitments Forward Sales Commitments And Fair Value Adjustment Of Loans Held For Sale GainLossOnInterestRateLockCommitmentsForwardSalesCommitmentsAndFairValueAdjustmentOfLoansHeldForSale	-2303000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-3847000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-306000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	29487000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	21862000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	385986000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-49597000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	9532000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-7396000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	616000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	851000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	23011000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	28157000	USD
	rdfn	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	-9644000	USD
	rdfn	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	-8368000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	745703000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	479153000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	744886000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	459605000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-414121000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	51535000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	20575000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10391000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	129277000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	135118000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	98687000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	6583000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	96303000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	82772000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	608000000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-562862000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-56154000	USD
	rdfn	Proceeds From Issuance Of Temporary Equity ProceedsFromIssuanceOfTemporaryEquity	0	USD
	rdfn	Proceeds From Issuance Of Temporary Equity ProceedsFromIssuanceOfTemporaryEquity	39801000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	69701000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	14194000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	15119000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	21088000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	10987000	USD
	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	710535000	USD
	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	473283000	USD
	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	709739000	USD
	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	454277000	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	431717000	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	57378000	USD
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	256039000	USD
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	46899000	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	561529000	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
	rdfn	Purchase Of Capped Call Related To Convertible Debt PurchaseOfCappedCallRelatedToConvertibleDebt	62647000	USD
	rdfn	Purchase Of Capped Call Related To Convertible Debt PurchaseOfCappedCallRelatedToConvertibleDebt	0	USD
	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	2159000	USD
	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
	rdfn	Proceeds From Customer Escrow Deposits ProceedsFromCustomerEscrowDeposits	3161000	USD
	rdfn	Proceeds From Customer Escrow Deposits ProceedsFromCustomerEscrowDeposits	2097000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	567000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	59000	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	485000	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	4000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	668412000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	145153000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-3000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-3000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-16000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-308574000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	140518000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	945820000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	247448000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	637246000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	387966000	USD
	us-gaap	Interest Paid Net InterestPaidNet	5539000	USD
	us-gaap	Interest Paid Net InterestPaidNet	3001000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	2745000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1714000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	0	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	973000	USD
	rdfn	Leasehold Improvements Paid Directly By Lessor LeaseholdImprovementsPaidDirectlyByLessor	1334000	USD
	rdfn	Leasehold Improvements Paid Directly By Lessor LeaseholdImprovementsPaidDirectlyByLessor	37000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	325596000	USD
CY2021Q3	us-gaap	Temporary Equity Stock Issued During Period Value New Issues TemporaryEquityStockIssuedDuringPeriodValueNewIssues	0	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1696000	USD
CY2021Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4558000	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	-10000	USD
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14139000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-30000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-18949000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	317884000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	590557000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	7299000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	6896000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	21088000	USD
	rdfn	Adjustments To Additional Paid In Capital Purchase Of Capped Calls Related To Convertible Debt AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCallsRelatedToConvertibleDebt	62647000	USD
	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	-63000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	42183000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-164000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-82611000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	317884000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	355260000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3998000	USD
CY2020Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4922000	USD
CY2020Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4922000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11910000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-133000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	34166000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	400279000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	331446000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	69701000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	3436000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	11502000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	10987000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	27477000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	266000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-32562000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	400279000	USD
CY2020Q4	us-gaap	Convertible Debt Noncurrent ConvertibleDebtNoncurrent	488268000	USD
CY2021Q1	us-gaap	Convertible Debt Noncurrent ConvertibleDebtNoncurrent	648023000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	860556000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	55535000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	236916000	USD
	us-gaap	Use Of Estimates UseOfEstimates	<span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">—The preparation of consolidated financial statements, in conformity with GAAP, requires our management to make estimates and assumptions that affect the reported amounts of assets and liabilities and results of operations during the respective periods. Our estimates include, but are not limited to, the valuation of deferred income taxes, stock-based compensation, net realizable value of inventory, capitalization of website and software development costs, the incremental borrowing rate for the determination of the present value of lease payments, recoverability of intangible assets with finite lives, fair value of our mortgage loans held for sale, fair value of interest rate lock commitments, and forward sales commitments, fair value of reporting units for purposes of evaluating goodwill for impairment, current expected credit losses on certain financial assets, the fair value of the convertible feature related to our convertible senior notes, and the fair value of assets acquired and liabilities assumed in connection with our acquisition of RentPath. The amounts ultimately realized from the affected assets or ultimately recognized as liabilities will depend on, among other factors, general business conditions and could differ materially in the near term from the carrying amounts reflected in the consolidated financial statements.</span>
CY2020Q4	us-gaap	Convertible Debt Current ConvertibleDebtCurrent	22482000	USD
CY2021Q1	us-gaap	Convertible Debt Current ConvertibleDebtCurrent	25205000	USD
CY2021Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	690316000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-270313000	USD
CY2021Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-262551000	USD
CY2021Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	202000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	7925000	USD
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	6	segment
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2021Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	540074000	USD
CY2021Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	412772000	USD
CY2020Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	143844000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	983912000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	489586000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1279708000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	641576000	USD
CY2021Q3	us-gaap	Gross Profit GrossProfit	127302000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	93072000	USD
	us-gaap	Gross Profit GrossProfit	295796000	USD
	us-gaap	Gross Profit GrossProfit	151990000	USD
CY2021Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	178000	USD
CY2020Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	319000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	472000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	1859000	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	3672000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	2522000	USD
	us-gaap	Interest Expense InterestExpense	7822000	USD
CY2021Q3	us-gaap	Inventory Net InventoryNet	435144000	USD
	us-gaap	Interest Expense InterestExpense	7631000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-311000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-5363000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2021Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4128000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-640000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4099000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1943000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-18949000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	34166000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-82611000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-32562000	USD
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	1771000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issues FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues	14523000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	14956000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-254000	USD
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	1084000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome	-687000	USD
CY2021Q3	us-gaap	Share Price SharePrice	50.10
CY2021Q3	us-gaap	Interest Receivable InterestReceivable	148000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	108000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2021Q3	us-gaap	Inventory Real Estate Held For Sale InventoryRealEstateHeldForSale	170731000	USD
CY2020Q4	us-gaap	Inventory Real Estate Held For Sale InventoryRealEstateHeldForSale	17153000	USD
CY2021Q3	rdfn	Inventory Real Estate Not Available For Sale InventoryRealEstateNotAvailableForSale	38835000	USD
CY2020Q4	rdfn	Inventory Real Estate Not Available For Sale InventoryRealEstateNotAvailableForSale	7225000	USD
CY2021Q3	us-gaap	Inventory Real Estate Construction In Process InventoryRealEstateConstructionInProcess	225578000	USD
CY2020Q4	us-gaap	Inventory Real Estate Construction In Process InventoryRealEstateConstructionInProcess	24780000	USD
	rdfn	Number Of Homes Purchased NumberOfHomesPurchased	1528	home
	rdfn	Inventory Net Additions InventoryNetAdditions	790738000	USD
	rdfn	Number Of Homes Sold NumberOfHomesSold	851	home
CY2020Q4	us-gaap	Inventory Net InventoryNet	49158000	USD
CY2021Q3	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	2551000	USD
CY2020Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	29000	USD
	rdfn	Inventory Net Sales InventoryNetSales	415110000	USD
	rdfn	Number Of Homes Purchased NumberOfHomesPurchased	253	home
	rdfn	Inventory Net Additions InventoryNetAdditions	101759000	USD
	rdfn	Number Of Homes Sold NumberOfHomesSold	370	home
	rdfn	Inventory Net Sales InventoryNetSales	149676000	USD
CY2021Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	54776000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	41614000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	43988000	USD
CY2021Q3	us-gaap	Depreciation Depreciation	5399000	USD
CY2020Q3	us-gaap	Depreciation Depreciation	3594000	USD
	us-gaap	Depreciation Depreciation	14369000	USD
	us-gaap	Depreciation Depreciation	10215000	USD
CY2021Q3	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	4727000	USD
CY2020Q3	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	2773000	USD
	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	13137000	USD
	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	8286000	USD
CY2021Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	4127000	USD
CY2020Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	3210000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	11545000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	9679000	USD
CY2021Q3	rdfn	Finance Lease Cost FinanceLeaseCost	160000	USD
CY2020Q3	rdfn	Finance Lease Cost FinanceLeaseCost	19000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	712000	USD
	rdfn	Finance Lease Cost FinanceLeaseCost	386000	USD
	rdfn	Finance Lease Cost FinanceLeaseCost	58000	USD
CY2021Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	430000	USD
CY2020Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	218000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1156000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	4397000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	120000	USD
CY2021Q3	rdfn	Lessee Operating Lease Liability Other Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityOtherPaymentsDueNextTwelveMonths	256000	USD
CY2021Q3	rdfn	Lessee Lease Liability Payments Due Next Twelve Months LesseeLeaseLiabilityPaymentsDueNextTwelveMonths	4773000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	16852000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	478000	USD
CY2021Q3	rdfn	Lessee Operating Lease Liability Other Payments Due Year One LesseeOperatingLeaseLiabilityOtherPaymentsDueYearOne	467000	USD
CY2021Q3	rdfn	Lessee Lease Liability Payments Due Year One LesseeLeaseLiabilityPaymentsDueYearOne	17797000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	15779000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	465000	USD
CY2021Q3	rdfn	Lessee Operating Lease Liability Other Payments Due Year Two LesseeOperatingLeaseLiabilityOtherPaymentsDueYearTwo	0	USD
CY2021Q3	rdfn	Lessee Lease Liability Payments Due Year Two LesseeLeaseLiabilityPaymentsDueYearTwo	16244000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	14324000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	379000	USD
CY2021Q3	rdfn	Lessee Operating Lease Liability Other Payments Due Year Three LesseeOperatingLeaseLiabilityOtherPaymentsDueYearThree	0	USD
CY2021Q3	rdfn	Lessee Lease Liability Payments Due Year Three LesseeLeaseLiabilityPaymentsDueYearThree	14703000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	11189000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	80000	USD
CY2021Q3	rdfn	Lessee Operating Lease Liability Other Payments Due Year Four LesseeOperatingLeaseLiabilityOtherPaymentsDueYearFour	0	USD
CY2021Q3	rdfn	Lessee Lease Liability Payments Due Year Four LesseeLeaseLiabilityPaymentsDueYearFour	11269000	USD
CY2021Q3	rdfn	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	16929000	USD
CY2021Q3	rdfn	Finance Lease Liability To Be Paid After Year Four FinanceLeaseLiabilityToBePaidAfterYearFour	0	USD
CY2021Q3	rdfn	Lessee Operating Lease Liability Other Payments After Year Four LesseeOperatingLeaseLiabilityOtherPaymentsAfterYearFour	0	USD
CY2021Q3	rdfn	Lessee Lease Liability Payments Due After Year Four LesseeLeaseLiabilityPaymentsDueAfterYearFour	16929000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	79470000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	1522000	USD
CY2021Q3	rdfn	Lessee Operating Lease Liability Other Payments Due LesseeOperatingLeaseLiabilityOtherPaymentsDue	723000	USD
CY2021Q3	rdfn	Lessee Lease Liability Payments Due LesseeLeaseLiabilityPaymentsDue	81715000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	8316000	USD
CY2021Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	124000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	71154000	USD
CY2021Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	1398000	USD
	rdfn	Operating Lease Capitalized Interest Expense OperatingLeaseCapitalizedInterestExpense	2788000	USD
	rdfn	Financing Lease Capitalized Interest Expense FinancingLeaseCapitalizedInterestExpense	66000	USD
CY2021Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y1M6D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y2M12D
CY2021Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P3Y3M18D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P3Y6M
CY2021Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.044
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.044
CY2021Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.054
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.054
	us-gaap	Operating Lease Payments OperatingLeasePayments	12006000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	10584000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	64000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	7000	USD
	rdfn	Finance Lease Cash Flows From Finance Lease Excluding Principal Payments And Interest FinanceLeaseCashFlowsFromFinanceLeaseExcludingPrincipalPaymentsAndInterest	226000	USD
	rdfn	Finance Lease Cash Flows From Finance Lease Excluding Principal Payments And Interest FinanceLeaseCashFlowsFromFinanceLeaseExcludingPrincipalPaymentsAndInterest	38000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	6544000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	354000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	987000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	USD
CY2021Q3	rdfn	Lessee Lease Liability Payments Remainder Of Fiscal Year LesseeLeaseLiabilityPaymentsRemainderOfFiscalYear	137325000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	215880000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	21024000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	194856000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	4880000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	3050000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1830000	USD
CY2021Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8926000	USD
CY2020Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	122000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	17974000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	366000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	8926000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	35705000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	35705000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	20458000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	15050000	USD
CY2021Q3	rdfn	Finite Lived Intangible Asset Expected Amortization After Year Four FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour	79012000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	194856000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	9186000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	407228000	USD
CY2021Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	68230000	USD
CY2021Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	68230000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	49238000	USD
CY2021Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	20015000	USD
CY2021Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	20015000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	9722000	USD
CY2021Q3	rdfn	Accrued Payroll Taxes Current Cares Act AccruedPayrollTaxesCurrentCARESAct	7841000	USD
CY2020Q4	rdfn	Accrued Payroll Taxes Current Cares Act AccruedPayrollTaxesCurrentCARESAct	6812000	USD
CY2021Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	5941000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	3688000	USD
CY2021Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	102027000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	69460000	USD
CY2021Q3	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	14344000	USD
CY2020Q4	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	11183000	USD
CY2021Q3	rdfn	Miscellaneous Other Payables Current MiscellaneousOtherPayablesCurrent	2422000	USD
CY2020Q4	rdfn	Miscellaneous Other Payables Current MiscellaneousOtherPayablesCurrent	2001000	USD
CY2021Q3	rdfn	Other Payables Current OtherPayablesCurrent	16766000	USD
CY2020Q4	rdfn	Other Payables Current OtherPayablesCurrent	13184000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	110000000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	110000000	USD
CY2021Q3	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	39857000	USD
CY2021Q3	rdfn	Temporary Equity Dividends Shares TemporaryEquityDividendsShares	30640	shares
CY2020Q2	us-gaap	Convertible Preferred Stock Shares Issued Upon Conversion ConvertiblePreferredStockSharesIssuedUponConversion	2622177	shares
	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.00055
	us-gaap	Preferred Stock Dividend Rate Per Dollar Amount PreferredStockDividendRatePerDollarAmount	17.95
CY2021Q3	rdfn	Temporary Equity Conversion Price Ratio Denominator TemporaryEquityConversionPriceRatioDenominator	19.51
	rdfn	Temporary Equity Conversion Stock Price Trigger TemporaryEquityConversionStockPriceTrigger	27.32
	rdfn	Temporary Equity Threshold Consecutive Trading Days TemporaryEquityThresholdConsecutiveTradingDays	30	tradingDay
	rdfn	Temporary Equity Threshold Consecutive Trading Days TemporaryEquityThresholdConsecutiveTradingDays	30	tradingDay
	rdfn	Temporary Equity Threshold Consecutive Trading Days TemporaryEquityThresholdConsecutiveTradingDays	30	tradingDay
CY2021Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2021Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2020Q4	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	10000000	shares
CY2021Q3	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	10000000	shares
CY2020Q4	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.001
CY2021Q3	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.001
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5733738	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.23
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y4M20D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	352076000	USD
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1354078	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	5.10
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	290	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	10.80
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	5113	shares
CY2020Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-653000	USD
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	10.80
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4374257	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	7.88
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y11M1D
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	184685000	USD
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	4224257	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	7.18
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y9M10D
CY2021Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	181295000	USD
CY2021Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	95000	USD
CY2021Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13110000	USD
CY2020Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11348000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	39438000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	25764000	USD
CY2021Q3	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1028000	USD
CY2020Q3	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	563000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	2745000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1714000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-18949000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	34166000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-82611000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-82611000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-32562000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-32562000	USD
CY2021Q3	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	1662000	USD
CY2020Q3	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	1530000	USD
	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	5875000	USD
	us-gaap	Temporary Equity Dividends Adjustment TemporaryEquityDividendsAdjustment	2814000	USD
CY2021Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2021Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2020Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-653000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-20611000	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-20611000	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-20611000	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-20611000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	31983000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	31983000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	31983000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	31983000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-88486000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-88486000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-88486000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-88486000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-35376000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-35376000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-35376000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-35376000	USD
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	105144872	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	99840144	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	104327614	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	97365122	shares
CY2021Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	7767567	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	105144872	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	107607711	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	104327614	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	97365122	shares
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.20
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.85
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.36
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.20
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.85
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.36
CY2021Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	26029681	shares
CY2020Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6745398	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	26029681	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	16732739	shares
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-5363000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.0610
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0
CY2017Q2	rdfn	Operating Loss Carryforwards Limitations On Use Value OperatingLossCarryforwardsLimitationsOnUseValue	1538000	USD
CY2021Q3	rdfn	Adjustments To Additional Paid In Capital Convertible Debt Capped Call Transaction AdjustmentsToAdditionalPaidInCapitalConvertibleDebtCappedCallTransaction	62647000	USD

Files In Submission

Name	View Source	Status
0001382821-21-000314-index-headers.html	Edgar Link	pending
0001382821-21-000314-index.html	Edgar Link	pending
0001382821-21-000314.txt	Edgar Link	pending
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rdfn-20210930_htm.xml	Edgar Link	completed
rdfn-20210930_lab.xml	Edgar Link	unprocessable
rdfn-20210930_pre.xml	Edgar Link	unprocessable
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$RDFN
Redfin Corp Stock $rdfn

2021 Q4 Form 10-Q Financial Statement

#000138282121000314 Filed on November 04, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

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$RDFN Redfin Corp Stock $rdfn

2021 Q4 Form 10-Q Financial Statement

#000138282121000314 Filed on November 04, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$RDFN
Redfin Corp Stock $rdfn