Segment Reporting and Revenue - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 325,661	$ 597,346
Cost of revenue	269,454	524,808
Gross profit	56,207	72,538
Technology and development	48,192	49,640
Marketing	40,908	43,342
General and administrative	69,962	58,966
Restructuring and reorganization	1,053	5,710
Total operating expenses	160,115	157,658
Loss from operations	(103,908)	(85,120)
Interest income, interest expense, income tax expense, gain on extinguishment of convertible senior notes, and other expense, net	43,110	(5,686)
Net loss	(60,798)	(90,806)
Operating Segments | Real estate segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	127,296	177,487
Cost of revenue	111,494	153,784
Gross profit	15,802	23,703
Technology and development	28,895	26,739
Marketing	25,060	30,844
General and administrative	19,618	22,992
Restructuring and reorganization	0	0
Total operating expenses	73,573	80,575
Loss from operations	(57,771)	(56,872)
Interest income, interest expense, income tax expense, gain on extinguishment of convertible senior notes, and other expense, net	0	0
Net loss	(57,771)	(56,872)
Operating Segments | Properties segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	112,727	379,753
Cost of revenue	114,658	358,866
Gross profit	(1,931)	20,887
Technology and development	529	4,119
Marketing	505	1,153
General and administrative	523	2,825
Restructuring and reorganization	0	0
Total operating expenses	1,557	8,097
Loss from operations	(3,488)	12,790
Interest income, interest expense, income tax expense, gain on extinguishment of convertible senior notes, and other expense, net	814	(1,624)
Net loss	(2,674)	11,166
Operating Segments | Rentals segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	42,870	38,044
Cost of revenue	9,765	7,193
Gross profit	33,105	30,851
Technology and development	15,964	14,282
Marketing	14,326	11,042
General and administrative	26,302	24,192
Restructuring and reorganization	0	0
Total operating expenses	56,592	49,516
Loss from operations	(23,487)	(18,665)
Interest income, interest expense, income tax expense, gain on extinguishment of convertible senior notes, and other expense, net	45	469
Net loss	(23,442)	(18,196)
Operating Segments | Mortgage Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	36,489	2,917
Cost of revenue	29,213	5,517
Gross profit	7,276	(2,600)
Technology and development	643	2,347
Marketing	980	28
General and administrative	6,929	1,524
Restructuring and reorganization	0	0
Total operating expenses	8,552	3,899
Loss from operations	(1,276)	(6,499)
Interest income, interest expense, income tax expense, gain on extinguishment of convertible senior notes, and other expense, net	(60)	1
Net loss	(1,336)	(6,498)
Other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	7,428	4,368
Cost of revenue	5,473	4,671
Gross profit	1,955	(303)
Technology and development	1,224	1,036
Marketing	10	53
General and administrative	1,053	712
Restructuring and reorganization	0	0
Total operating expenses	2,287	1,801
Loss from operations	(332)	(2,104)
Interest income, interest expense, income tax expense, gain on extinguishment of convertible senior notes, and other expense, net	115	1
Net loss	(217)	(2,103)
Intercompany eliminations
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(1,149)	(5,223)
Cost of revenue	(1,149)	(5,223)
Gross profit	0	0
Technology and development	937	1,117
Marketing	27	222
General and administrative	15,537	6,721
Restructuring and reorganization	1,053	5,710
Total operating expenses	17,554	13,770
Loss from operations	(17,554)	(13,770)
Interest income, interest expense, income tax expense, gain on extinguishment of convertible senior notes, and other expense, net	42,196	(4,533)
Net loss	$ 24,642	$ (18,303)