CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - Unaudited - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Distributions In Excess Of Earnings	Accumulated Other Comprehensive Income / (Loss)	Noncontrolling Interest in Joint Ventures
BALANCE at Dec. 31, 2019	$ 1,202,329	$ 4	$ 1,514,055	$ (316,302)	$ 2,807	$ 1,765
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	23,298	0	0	23,297	0	1
Net unrealized change in fair value of cash flow hedges	(15,790)	0	0	0	(15,790)	0
Common dividends declared	(29,366)	0	0	(29,366)	0	0
Stock-based compensation, net of forfeitures	1,781	0	1,781	0	0	0
Issuance of common stock, common stock offering, net of expenses	14,734	0	14,734	0	0	0
Withheld shares of common stock to satisfy tax withholding obligations in connection with the vesting of restricted stock	(4,589)	0	(4,589)	0	0	0
Distributions to noncontrolling interest	(34)	0	0	0	0	(34)
BALANCE at Mar. 31, 2020	1,192,363	4	1,525,981	(322,371)	(12,983)	1,732
BALANCE at Dec. 31, 2020	1,270,518	4	1,610,053	(329,667)	(10,752)	880
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	27,357	0	0	27,339	0	18
Net unrealized change in fair value of cash flow hedges	8,214	0	0	0	8,214	0
Common dividends declared	(31,672)	0	0	(31,672)	0	0
Stock-based compensation, net of forfeitures	2,147	0	2,147	0	0	0
Issuance of common stock, common stock offering, net of expenses	44,485	0	44,485	0	0	0
Withheld shares of common stock to satisfy tax withholding obligations in connection with the vesting of restricted stock	(4,240)	0	(4,240)	0	0	0
Distributions to noncontrolling interest	(11)	0	0	0	0	(11)
BALANCE at Mar. 31, 2021	$ 1,316,798	$ 4	$ 1,652,445	$ (334,000)	$ (2,538)	$ 887