CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Distributions in Excess of Net Income	Total Stockholders' Equity	Noncontrolling Interests	Total
Balance at Dec. 31, 2018	$ 363	$ 491,314	$ (2,193)	$ (246,929)	$ 242,555	$ 92,078	$ 334,633
Balance (in shares) at Dec. 31, 2018	36,708,691
Increase (Decrease) in Stockholders' Equity
Issuance of stock awards, net of forfeitures (in shares)	192,009
Exercise of stock options		17			17		17
Exercise of stock options (in shares)	1,129
Share-based compensation	$ 1	3,592			3,593		3,593
Dividends and distributions				(40,581)	(40,581)	(12,733)	(53,314)
Net income				19,661	19,661	6,244	25,905
Other comprehensive income (loss)			(3,540)		(3,540)	(1,124)	(4,664)
Balance at Mar. 31, 2019	$ 364	494,923	(5,733)	(267,849)	221,705	84,465	306,170
Balance (in shares) at Mar. 31, 2019	36,901,829
Balance at Dec. 31, 2018	$ 363	491,314	(2,193)	(246,929)	242,555	92,078	334,633
Balance (in shares) at Dec. 31, 2018	36,708,691
Increase (Decrease) in Stockholders' Equity
Net income							51,648
Balance at Jun. 30, 2019	$ 364	498,828	(6,235)	(293,209)	199,748	76,375	276,123
Balance (in shares) at Jun. 30, 2019	36,890,371
Balance at Mar. 31, 2019	$ 364	494,923	(5,733)	(267,849)	221,705	84,465	306,170
Balance (in shares) at Mar. 31, 2019	36,901,829
Increase (Decrease) in Stockholders' Equity
Redemption of noncontrolling interests		20			20	(20)
Redemption of noncontrolling interests (in shares)	2,770
Issuance of stock awards, net of forfeitures (in shares)	(15,567)
Exercise of stock options		21			21		21
Exercise of stock options (in shares)	1,339
Share-based compensation		3,864			3,864		3,864
Dividends declared on preferred stock				(44,895)	(44,895)	(14,118)	(59,013)
Net income				19,535	19,535	6,208	25,743
Other comprehensive income (loss)			(502)		(502)	(160)	(662)
Balance at Jun. 30, 2019	$ 364	498,828	(6,235)	(293,209)	199,748	76,375	276,123
Balance (in shares) at Jun. 30, 2019	36,890,371
Balance at Dec. 31, 2019	$ 373	512,324	(6,026)	(348,509)	158,162	55,726	213,888
Balance (in shares) at Dec. 31, 2019	37,701,042
Increase (Decrease) in Stockholders' Equity
Redemption of noncontrolling interests		11			11	(11)
Redemption of noncontrolling interests (in shares)	2,140
Issuance of stock awards, net of forfeitures (in shares)	199,541
Exercise of stock options		73			73		73
Exercise of stock options (in shares)	3,210
Share-based compensation	$ 1	3,725			3,726		3,726
Dividends and distributions				(46,174)	(46,174)	(13,139)	(59,313)
Net income				17,848	17,848	5,140	22,988
Other comprehensive income (loss)			(13,132)		(13,132)	(3,782)	(16,914)
Balance at Mar. 31, 2020	$ 374	516,133	(19,158)	(376,835)	120,514	43,934	164,448
Balance (in shares) at Mar. 31, 2020	37,905,933
Balance at Dec. 31, 2019	$ 373	512,324	(6,026)	(348,509)	158,162	55,726	213,888
Balance (in shares) at Dec. 31, 2019	37,701,042
Increase (Decrease) in Stockholders' Equity
Net income							48,076
Balance at Jun. 30, 2020	$ 420	545,814	(23,840)	(408,021)	114,373	17,209	131,582
Balance (in shares) at Jun. 30, 2020	42,533,420
Balance at Mar. 31, 2020	$ 374	516,133	(19,158)	(376,835)	120,514	43,934	164,448
Balance (in shares) at Mar. 31, 2020	37,905,933
Increase (Decrease) in Stockholders' Equity
Redemption of noncontrolling interests	$ 46	25,105	(2,594)		22,557	(22,557)
Redemption of noncontrolling interests (in shares)	4,620,000
Issuance of stock awards, net of forfeitures (in shares)	(1,185)
Exercise of stock options		99			99		99
Exercise of stock options (in shares)	8,672
Share-based compensation		4,477			4,477		4,477
Dividends and distributions				(51,857)	(51,857)	(7,502)	(59,359)
Net income				20,671	20,671	4,417	25,088
Other comprehensive income (loss)			(2,088)		(2,088)	(1,083)	(3,171)
Balance at Jun. 30, 2020	$ 420	$ 545,814	$ (23,840)	$ (408,021)	$ 114,373	$ 17,209	$ 131,582
Balance (in shares) at Jun. 30, 2020	42,533,420