Consolidated Statements of Changes in Shareholders' Equity - USD ($)	Total	Common stock	Additional paid-in capital	Accumulated deficit	Treasury stock	Parent	Noncontrolling Interest	San Mateo I	San Mateo I Additional paid-in capital	San Mateo I Parent	San Mateo II	San Mateo II Additional paid-in capital	San Mateo II Parent	San Mateo II Noncontrolling Interest
Beginning Balance at Dec. 31, 2016	$ 691,445,000	$ 995,000	$ 1,325,481,000	$ (636,351,000)	$ 0	$ 690,125,000	$ 1,320,000
Beginning Balance, shares (in shares) at Dec. 31, 2016		99,519,000			6,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock, shares		8,000,000
Issuance of Class A common stock	208,720,000	$ 80,000	208,640,000			208,720,000
Issuance of common stock pursuant to employee stock compensation plan, shares		530,000
Issuance of common stock pursuant to employee stock compensation plan	0	$ 5,000	(5,000)			0
Issuance of Class A common stock to Board member and advisors, shares		77,000
Issuance of Class A common stock to Board member and advisors	0	$ 1,000	(1,000)			0
Stock options expense related to equity based awards	19,594,000		19,594,000			19,594,000
Stock options exercised, shares		514,000
Stock options exercised, net of options forfeited in net share settlements	(1,184,000)	$ 5,000	(1,189,000)			(1,184,000)
Cost to issue equity	(280,000)		(280,000)			(280,000)
Restricted stock forfeited, shares					123,000
Restricted stock forfeited	(1,658,000)				$ (1,658,000)	(1,658,000)
Purchase of non-controlling interest of less-than-wholly-owned subsidiary	(2,653,000)		(1,250,000)			(1,250,000)	(1,403,000)
Contributions related to formation of San Mateo I (see Note 6)	171,500,000		116,622,000			116,622,000	54,878,000
Contributions from non-controlling interest owners of less-than-wholly-owned subsidiaries	44,100,000						44,100,000
Distributions to non-controlling interest owners of less-than wholly-owned subsidiaries	(10,045,000)						(10,045,000)
Cancellation of treasury stock, shares		(126,000)			(126,000)
Cancellation of treasury stock	0	$ (1,000)	(1,588,000)		$ (1,589,000)	0
Net (loss) income	138,007,000			125,867,000		125,867,000	12,140,000
Ending Balance, shares (in shares) at Dec. 31, 2017		108,514,000			3,000
Ending Balance at Dec. 31, 2017	1,257,546,000	$ 1,085,000	1,666,024,000	(510,484,000)	$ (69,000)	1,156,556,000	100,990,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock, shares		7,000,000
Issuance of Class A common stock	226,612,000	$ 70,000	226,542,000	0		226,612,000
Issuance of common stock pursuant to employee stock compensation plan, shares		759,000
Issuance of common stock pursuant to employee stock compensation plan	0	$ 8,000	(8,000)	0		0
Issuance of Class A common stock to Board member and advisors, shares		81,000
Issuance of Class A common stock to Board member and advisors	0	$ 1,000	(1,000)	0		0
Stock options expense related to equity based awards	22,660,000		22,660,000	0		22,660,000
Stock options exercised, shares		179,000
Stock options exercised, net of options forfeited in net share settlements	(1,267,000)	$ 2,000	(1,269,000)	0		(1,267,000)
Cost to issue equity	(204,000)		(204,000)	0		(204,000)
Restricted stock forfeited, shares					176,000
Restricted stock forfeited	(4,384,000)				$ (4,384,000)	(4,384,000)
Contributions related to formation of San Mateo I (see Note 6)	14,700,000		14,700,000	0		14,700,000
Contributions from non-controlling interest owners of less-than-wholly-owned subsidiaries	85,750,000						85,750,000
Distributions to non-controlling interest owners of less-than wholly-owned subsidiaries	(121,520,000)						(121,520,000)
Cancellation of treasury stock, shares		(158,000)			(158,000)
Cancellation of treasury stock	0	$ (2,000)	(4,036,000)		$ 4,038,000	0
Net (loss) income	$ 299,764,000			274,207,000		274,207,000	25,557,000
Ending Balance, shares (in shares) at Dec. 31, 2018	108,510,160	116,375,000			21,000
Ending Balance at Dec. 31, 2018	$ 1,779,657,000	$ 1,164,000	1,924,408,000	(236,277,000)	$ (415,000)	1,688,880,000	90,777,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to employee stock compensation plan, shares		240,000
Issuance of common stock pursuant to employee stock compensation plan	0	$ 2,000	(2,000)	0		0	0
Stock Issued During Period, Shares, Issued for Services		50,000
Stock Issued During Period, Value, Issued for Services	0	$ 0	0			0
Stock options expense related to equity based awards	$ 23,396,000		23,396,000			23,396,000
Stock options exercised, shares	223,000	220,000
APIC, Share-based Payment Arrangement, Recognition and Exercise	$ 3,300,000	$ 2,000	3,298,000			3,300,000
Liability-Based Stock Option Awards Settled, Shares		1,000
Liability-Based Stock Option Awards Settled	11,000
Restricted stock forfeited, shares					222,000
Restricted stock forfeited	(3,691,000)				$ (3,691,000)	(3,691,000)
Contributions related to formation of San Mateo I (see Note 6)								$ 11,613,000	$ 11,613,000	$ 11,613,000	$ 0	$ (506,000)	$ (506,000)	$ 506,000
Contributions from non-controlling interest owners of less-than-wholly-owned subsidiaries	71,384,000		22,874,000			22,874,000	48,510,000
Distributions to non-controlling interest owners of less-than wholly-owned subsidiaries	(39,200,000)						(39,200,000)
Cancellation of treasury stock, shares		(242,000)			(242,000)
Cancellation of treasury stock		$ (2,000)	(4,078,000)		$ 4,080,000
Net (loss) income	$ 122,982,000			87,777,000		87,777,000	35,205,000
Ending Balance, shares (in shares) at Dec. 31, 2019	116,353,590	116,644,000			1,000
Ending Balance at Dec. 31, 2019	$ 1,969,452,000	$ 1,166,000	$ 1,981,014,000	$ (148,500,000)	$ (26,000)	$ 1,833,654,000	$ 135,798,000