Segment Information - Additional Information (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) segment	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Segment information
Number of reportable segments | segment				2
Total revenues		$ 218,107	$ 253,699	$ 444,209	$ 568,002
Net income		117,134	66,627	113,279	193,741
Total assets	[1]	11,166,164		11,166,164		$ 11,707,567
Marketing, general and administrative		22,064	23,510	44,949	43,080
Operating Segments | Real Estate Segment
Segment information
Total revenues		198,000	213,756	404,829	489,526
Net income		100,239	40,057	80,212	151,290
Total assets		10,042,944		10,042,944		10,579,899
Operating Segments | Debt and Preferred Equity Segment
Segment information
Total revenues		20,107	39,943	39,380	78,476
Net income		16,895	$ 26,570	33,067	$ 42,451
Total assets		$ 1,123,220		$ 1,123,220		$ 1,127,668

[1] The Company's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $179.6 million and $41.2 million of land, $281.0 million and $57.9 million of building and improvements, $2.0 million and $2.0 million of building and leasehold improvements, $53.2 million and $37.8 million of right of use assets, $17.3 million and $10.3 million of accumulated depreciation, $291.4 million and $289.5 million of other assets included in other line items, $377.1 million and $94.0 million of real estate debt, net, $1.1 million and $0.7 million of accrued interest payable, $45.4 million and $29.9 million of lease liabilities, and $23.6 million and $56.6 million of other liabilities included in other line items as of June 30, 2021 and December 31, 2020, respectively.