Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Class A Common Stock	Class B Common Stock	Total Stockholders' Equity	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained (Deficit) Earnings	Non-controlling Interests	Private Perpetual Preferred Units
Beginning balance (in shares) at Dec. 31, 2017					160,425,000	1,052,000
Beginning balance at Dec. 31, 2017	$ 1,977,737			$ 1,168,282	$ 1,604	$ 11	$ 1,128,460	$ (8,555)	$ 46,762	$ 801,451	$ 8,004
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A shares, net of costs (in shares)					284,000
Issuance of Class A shares, net of costs	4,749			4,749	$ 3		4,746
Conversion of operating partnership units and Class B shares to Class A shares (in shares)					13,141,000	(14,000)
Conversion of operating partnership units and Class B shares to Class A shares	0			70,779	$ 132	$ (1)	70,452	196		(70,779)
Equity compensation:
LTIP Units, net of forfeitures	18,368									18,368
Restricted stock, net of forfeitures (in shares)					24,000
Restricted stock, net of forfeitures	417			417			417
Dividends and distributions	(126,539)			(70,854)					(70,854)	(54,749)	(936)
Net income	117,253			65,603					65,603	50,714	936
Other comprehensive income (loss)	(876)			(494)				(494)		(382)
Ending balance (in shares) at Dec. 31, 2018					173,874,000	1,038,000
Ending balance at Dec. 31, 2018	1,991,109			1,238,482	$ 1,739	$ 10	1,204,075	(8,853)	41,511	744,623	8,004
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of private perpetual preferred in exchange for common units										(21,147)	21,147
Conversion of operating partnership units and Class B shares to Class A shares (in shares)					6,951,000	(21,000)
Conversion of operating partnership units and Class B shares to Class A shares	0			27,495	$ 70		27,740	(315)		(27,495)
Equity compensation:
LTIP Units, net of forfeitures	20,239									20,239
Restricted stock, net of forfeitures (in shares)					53,000
Restricted stock, net of forfeitures	618			618			618
Dividends and distributions	(127,761)			(75,192)					(75,192)	(50,826)	(1,743)
Net income	84,290			49,445					49,445	33,102	1,743
Other comprehensive income (loss)	(20,582)			(12,328)				(12,328)		(8,254)
Ending balance (in shares) at Dec. 31, 2019		180,877,597	1,016,799		180,878,000	1,017,000
Ending balance at Dec. 31, 2019	1,947,913			1,228,520	$ 1,809	$ 10	1,232,433	(21,496)	15,764	690,242	29,151
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of private perpetual preferred in exchange for common units										(789)	789
Conversion of operating partnership units and Class B shares to Class A shares (in shares)					6,813,000	(7,000)
Conversion of operating partnership units and Class B shares to Class A shares	$ 0			29,863	$ 68		30,170	(375)		(29,863)
Repurchase of common shares (in shares)	(17,279,252)				(17,279,000)
Repurchases of common shares	$ (143,713)			(143,713)	$ (172)		(115,997)		(27,544)
Equity compensation:
LTIP Units, net of forfeitures	24,574									24,574
Restricted stock, net of forfeitures (in shares)					143,000
Restricted stock, net of forfeitures	921			921			921
Dividends and distributions	(65,047)			(37,181)					(37,181)	(23,669)	(4,197)
Net income	(22,889)			(16,712)					(16,712)	(10,374)	4,197
Other comprehensive income (loss)	(10,452)			(6,449)				(6,449)		(4,003)
Ending balance (in shares) at Dec. 31, 2020		170,555,274	1,010,130		170,555,000	1,010,000
Ending balance at Dec. 31, 2020	$ 1,731,307			$ 1,055,249	$ 1,705	$ 10	$ 1,147,527	$ (28,320)	$ (65,673)	$ 646,118	$ 29,940