CONDENSED CONSOLIDATED STATEMENT OF EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Dividends in excess of net income [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2018	$ 4	$ 1,277,592	$ (42,945)	$ 1,424	$ 2,411	$ 1,238,486
Balance (in shares) at Dec. 31, 2018	37,545,790
Issuance of common stock, net of issuance costs		57,845				57,845
Issuance of common stock, net of issuance costs (in shares)	874,268
Repurchase of common shares		(1,398)				(1,398)
Repurchase of common shares (in shares)	(21,868)
Issuance of restricted stock under the Omnibus Incentive Plan (in shares)	56,592
Stock-based compensation		913				913
Dividends and distributions declared for the period			(21,342)		(193)	(21,535)
Other comprehensive income (loss) - change in fair value and realized gain (loss) on settlement of interest rate swaps				(3,374)	(31)	(3,405)
Net income			18,347		169	18,516
Balance at Mar. 31, 2019	$ 4	1,334,952	(45,940)	(1,950)	2,356	1,289,422
Balance (in shares) at Mar. 31, 2019	38,454,782
Balance at Dec. 31, 2018	$ 4	1,277,592	(42,945)	1,424	2,411	1,238,486
Balance (in shares) at Dec. 31, 2018	37,545,790
Net income						37,238
Balance at Jun. 30, 2019	$ 4	1,522,644	(51,298)	(5,711)	2,284	1,467,923
Balance (in shares) at Jun. 30, 2019	41,967,282
Balance at Dec. 31, 2018	$ 4	1,277,592	(42,945)	1,424	2,411	1,238,486
Balance (in shares) at Dec. 31, 2018	37,545,790
Balance at Dec. 31, 2019	$ 5	1,752,912	(57,094)	(6,492)	2,231	1,691,562
Balance (in shares) at Dec. 31, 2019	45,573,623
Balance at Mar. 31, 2019	$ 4	1,334,952	(45,940)	(1,950)	2,356	1,289,422
Balance (in shares) at Mar. 31, 2019	38,454,782
Issuance of common stock, net of issuance costs		186,667				186,667
Issuance of common stock, net of issuance costs (in shares)	3,512,500
Stock-based compensation		1,025				1,025
Dividends and distributions declared for the period			(23,922)		(197)	(24,119)
Other comprehensive income (loss) - change in fair value and realized gain (loss) on settlement of interest rate swaps				(3,761)	(33)	(3,794)
Net income			18,564		158	18,722
Balance at Jun. 30, 2019	$ 4	1,522,644	(51,298)	(5,711)	2,284	1,467,923
Balance (in shares) at Jun. 30, 2019	41,967,282
Balance at Dec. 31, 2019	$ 5	1,752,912	(57,094)	(6,492)	2,231	1,691,562
Balance (in shares) at Dec. 31, 2019	45,573,623
Issuance of common stock, net of issuance costs		104,615				104,615
Issuance of common stock, net of issuance costs (in shares)	1,400,251
Repurchase of common shares		(1,627)				(1,627)
Repurchase of common shares (in shares)	(20,707)
Issuance of restricted stock under the Omnibus Incentive Plan (in shares)	48,942
Stock-based compensation		1,014				1,014
Dividends and distributions declared for the period			(26,677)		(203)	(26,880)
Other comprehensive income (loss) - change in fair value and realized gain (loss) on settlement of interest rate swaps				(32,799)	(243)	(33,042)
Net income			21,229		141	21,370
Balance at Mar. 31, 2020	$ 5	1,856,914	(62,542)	(39,291)	1,926	1,757,012
Balance (in shares) at Mar. 31, 2020	47,002,109
Balance at Dec. 31, 2019	$ 5	1,752,912	(57,094)	(6,492)	2,231	1,691,562
Balance (in shares) at Dec. 31, 2019	45,573,623
Net income						46,794
Balance at Jun. 30, 2020	$ 5	2,295,235	(69,595)	(41,544)	1,875	2,185,976
Balance (in shares) at Jun. 30, 2020	53,851,092
Balance at Mar. 31, 2020	$ 5	1,856,914	(62,542)	(39,291)	1,926	1,757,012
Balance (in shares) at Mar. 31, 2020	47,002,109
Issuance of common stock, net of issuance costs		437,100				437,100
Issuance of common stock, net of issuance costs (in shares)	6,851,695
Repurchase of common shares		(3)				(3)
Repurchase of common shares (in shares)	(51)
Forfeiture of restricted stock (in shares)	(2,661)
Stock-based compensation		1,224				1,224
Dividends and distributions declared for the period			(32,311)		(209)	(32,520)
Other comprehensive income (loss) - change in fair value and realized gain (loss) on settlement of interest rate swaps				(2,253)	(8)	(2,261)
Net income			25,258		166	25,424
Balance at Jun. 30, 2020	$ 5	$ 2,295,235	$ (69,595)	$ (41,544)	$ 1,875	$ 2,185,976
Balance (in shares) at Jun. 30, 2020	53,851,092