Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	[1]	$ 67,878	$ 76,674
Restricted cash	[1]	30,572	106,009
Mortgage loan receivables held for investment, net, at amortized cost:
Mortgage loans held by consolidated subsidiaries	[1]	3,318,390	3,282,462
Provision for loan losses	[1]	(17,900)	(4,000)
Mortgage loan receivables held for sale	[1]	182,439	230,180
Real estate securities	[1]	1,410,126	1,106,517
Real estate and related lease intangibles, net	[1]	998,022	1,032,041
Investments in unconsolidated joint ventures	[1]	40,354	35,441
FHLB stock	[1]	57,915	77,915
Derivative instruments	[1]	0	888
Accrued interest receivable	[1]	27,214	25,875
Other assets	[1]	157,862	55,613
Total assets	[1]	6,272,872	6,025,615
Liabilities
Debt obligations, net	[1]	4,452,574	4,379,826
Due to brokers	[1]	1,301	14
Derivative instruments	[1]	975	2,606
Amount payable pursuant to tax receivable agreement	[1]	1,570	1,656
Dividends payable	[1]	37,316	30,528
Accrued expenses	[1]	82,425	59,619
Other liabilities	[1]	53,076	63,220
Total liabilities	[1]	4,629,237	4,537,469
Commitments and contingencies (Note 18)	[1]	0	0
Equity
Additional paid-in capital	[1]	1,471,157	1,306,136
Treasury stock, 2,701,162 and 2,617,587 shares, at cost	[1]	(32,815)	(31,956)
Retained earnings (dividends in excess of earnings)	[1]	11,342	(39,112)
Accumulated other comprehensive income (loss)	[1]	(4,649)	(212)
Total shareholders’ equity	[1]	1,445,153	1,234,968
Noncontrolling interest in operating partnership	[1]	188,427	240,861
Noncontrolling interest in consolidated joint ventures	[1]	10,055	12,317
Total equity	[1]	1,643,635	1,488,146
Total liabilities and equity	[1]	6,272,872	6,025,615
Class A common stock, par value $0.001 per share, 600,000,000 shares authorized; 106,642,335 and 96,258,847 shares issued and 103,941,173 and 93,641,260 shares outstanding
Equity
Common stock	[1]	105	94
Class B common stock, par value $0.001 per share, 100,000,000 shares authorized; 13,117,419 and 17,667,251 shares issued and outstanding
Equity
Common stock	[1]	$ 13	$ 18

[1] Includes amounts relating to consolidated variable interest entities. See Note 3.