Investments in and Advances to Unconsolidated Affiliates - Unconsolidated Affiliates - Schedule of Condensed Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Combined and Condensed Statements of Operations
Depreciation and amortization	$ (31,345)	$ (33,793)	$ (62,735)	$ (67,170)
Equity in earnings (losses) of unconsolidated affiliates	1,106	(786)	3,369	469
Unconsolidated Affiliates
Combined and Condensed Statements of Operations
Revenues	19,541	16,372	36,822	36,714
Operating and other expenses	6,814	6,183	13,033	13,607
Interest expense	(4,581)	(5,014)	(9,403)	(10,270)
Depreciation and amortization	(5,676)	(6,524)	(14,477)	(12,885)
Gain on disposition of properties	0	0	3,206	0
Net income (loss) attributable to unconsolidated affiliates	2,470	(1,349)	3,115	(48)
Operating Partnership, as General Partner or Managing Member
Combined and Condensed Statements of Operations
Company’s share of equity in net income of unconsolidated affiliates	1,368	(510)	4,066	(174)
Basis differential amortization	262	322	697	648
Income attributable to unconsolidated affiliated recently sold or consolidated	0	46	0	1,291
Equity in earnings (losses) of unconsolidated affiliates	$ 1,106	$ (786)	$ 3,369	$ 469