Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended			24 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Corporate income tax rate (as a percent)												35.00%	21.00%
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Statutory federal income tax provision										$ (30,822)	$ (58,047)	$ (44,431)
Adjustment for nontaxable income of the REIT										15,803	50,075	38,272
State taxes (net of federal tax benefit)										(4,596)	(4,268)	(1,317)
Permanent share-based compensation adjustment										1,257	821	1,446
Other permanent items										(377)	(46)	(251)
Change in valuation allowance									$ 53,400	53,400
Effect of federal tax law change									$ 2,000			2,030
Other										(252)	(238)	9
Total (provision) benefit for income taxes	$ (4,732)	$ (3,537)	$ (8,232)	$ (1,974)	$ (1,997)	$ (1,863)	$ (5,676)	$ (2,209)		(18,475)	(11,745)	49,155
Domestic Tax Authority [Member]
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Change in valuation allowance										556	46	36,156
State and Local Jurisdiction [Member]
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Change in valuation allowance										$ (44)	$ (88)	$ 17,241