Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Revenue:
Revenue		$ 1,125,821	$ 454,104
Cost of revenue (exclusive of amortization)
Cost of revenue	[1]	761,672	151,348
Sales and marketing		204,648	161,587
Technology and development		134,918	107,770
General and administrative		92,285	95,774
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount		76,800	0
Integration costs		0	352
Total costs and expenses		1,270,323	516,831
Loss from operations		(144,502)	(62,727)
Other income		9,593	9,168
Interest expense		(37,592)	(16,466)
Loss before income taxes		(172,501)	(70,025)
Income tax benefit		9,228	2,500
Net loss		$ (163,273)	$ (67,525)
Net loss per share - basic and diluted (usd per share)		$ (0.78)	$ (0.33)
Weighted-average shares outstanding - basic and diluted (in shares)		210,674	204,514
Amortization of website development costs and intangible assets included in technology and development		$ 11,800	$ 11,000
Technology and Development
Cost of revenue (exclusive of amortization)
Amortization of website development costs and intangible assets included in technology and development		17,184	14,400
Homes
Revenue:
Revenue		769,873	128,472
Cost of revenue (exclusive of amortization)
Cost of revenue	[1]	732,199	122,419
Sales and marketing		71,589	20,862
Technology and development		32,538	12,281
General and administrative		23,421	14,357
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount		0	0
Integration costs		0	0
Total costs and expenses		859,747	169,919
Loss from operations		(89,874)	(41,447)
Other income		0	0
Interest expense		(8,084)	(3,758)
Loss before income taxes		(97,958)	(45,205)
IMT
Revenue:
Revenue		330,666	298,272
Cost of revenue (exclusive of amortization)
Cost of revenue	[1]	24,318	24,251
Sales and marketing		120,173	126,654
Technology and development		95,028	87,969
General and administrative		58,754	70,850
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount		73,900	0
Integration costs		0	0
Total costs and expenses		372,173	309,724
Loss from operations		(41,507)	(11,452)
Other income		0	0
Interest expense		0	0
Loss before income taxes		(41,507)	(11,452)
Mortgages Segment
Revenue:
Revenue		25,282	27,360
Cost of revenue (exclusive of amortization)
Cost of revenue	[1]	5,155	4,678
Sales and marketing		12,886	14,071
Technology and development		7,352	7,520
General and administrative		10,110	10,567
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount		2,900	0
Integration costs		0	352
Total costs and expenses		38,403	37,188
Loss from operations		(13,121)	(9,828)
Other income		202	313
Interest expense		(226)	(101)
Loss before income taxes		$ (13,145)	$ (9,616)

[1] Amortization of website development costs and intangible assets included in technology and development of $0 and $14,400 for the three months ended March 31, 2020 and 2019.