Condensed Consolidated Statement of Changes in Equity - USD ($) $ in Thousands		Total	Total Stockholders' Equity	Common Stock	Additional Paid-in Capital	Retained Earnings/(Accumulated Deficit)	Non-controlling Interest	Common Stock	Common Stock Total Stockholders' Equity	Common Stock Common Stock	Common Stock Additional Paid-in Capital
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Preferred Stock, Value, Outstanding		$ 111,034
Beginning balance (in shares) at Dec. 31, 2019		38,647,943		38,647,943
Beginning balance at Dec. 31, 2019		$ 868,699	$ 829,265	$ 39	$ 821,747	$ (103,555)	$ 39,434
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		(128,342)	(127,457)			(127,457)	(885)
Stock Issued During Period, Shares, New Issues	[1]							5,290,000
Stock Issued During Period, Value, New Issues	[1]							$ 95,292	$ 95,292	$ 5	$ 95,287
Shares Issued As Payment of Incentive Fee, Shares								637
Shares Issued As Payment of Incentive Fee								$ 12	$ 12	0	$ 12
Contributions from non-controlling interests		3,487					3,487
Dividends	[2]	(20,057)	(19,748)			(19,748)	(309)
Dividends, Preferred Stock, Cash	[3]	(1,941)	(1,941)			(1,941)
Distributions to non-controlling interests		(4,798)					(4,798)
Adjustment to non-controlling interests			(545)		(545)		545
Stock issued during period, shares, conversion of units				129,516
Stock Issued During Period, Value, Conversion of Units			2,378		2,378		(2,378)
Repurchase of shares of common stock (in shares)				(288,172)
Repurchase of shares of common stock		(3,035)	(3,035)		(3,035)					$ 0
Share-based long term incentive plan unit awards		$ 164	162		162		2
Ending balance (in shares) at Mar. 31, 2020		43,779,924		43,779,924
Ending balance at Mar. 31, 2020		$ 809,481	774,383	$ 44	916,006	(252,701)	35,098
Beginning balance (in shares) at Dec. 31, 2019		38,647,943		38,647,943
Beginning balance at Dec. 31, 2019		$ 868,699	829,265	$ 39	821,747	(103,555)	39,434
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ (87,903)
Stock Issued During Period, Shares, New Issues		5,290,000
Shares Issued As Payment of Incentive Fee, Shares		637
Repurchase of shares of common stock (in shares)		(288,172)
Repurchase of shares of common stock		$ (3,000)
Ending balance (in shares) at Jun. 30, 2020		43,779,924		43,779,924
Ending balance at Jun. 30, 2020		$ 837,679	800,896	$ 44	916,186	(226,368)	36,783
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Dividends declared (in usd per share)		$ 0.70
Preferred Stock, Dividends Per Share, Declared		$ 0.421875
Preferred Stock, Value, Outstanding		$ 111,034
Beginning balance (in shares) at Mar. 31, 2020		43,779,924		43,779,924
Beginning balance at Mar. 31, 2020		$ 809,481	774,383	$ 44	916,006	(252,701)	35,098
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 40,439	39,219			39,219	1,220
Stock Issued During Period, Shares, New Issues		0
Shares Issued As Payment of Incentive Fee, Shares		0
Contributions from non-controlling interests		$ 2,895					2,895
Dividends	[2]	(11,097)	(10,945)			(10,945)	(152)
Dividends, Preferred Stock, Cash	[3]	(1,941)	(1,941)			(1,941)
Distributions to non-controlling interests		$ (2,280)					(2,280)
Repurchase of shares of common stock (in shares)		0
Share-based long term incentive plan unit awards		$ 182	180		180		2
Ending balance (in shares) at Jun. 30, 2020		43,779,924		43,779,924
Ending balance at Jun. 30, 2020		$ 837,679	800,896	$ 44	916,186	(226,368)	36,783
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Dividends declared (in usd per share)		$ 0.25
Preferred Stock, Dividends Per Share, Declared		$ 0.421875
Preferred Stock, Value, Outstanding		$ 111,034
Preferred Stock, Value, Outstanding		$ 111,034
Beginning balance (in shares) at Dec. 31, 2020		43,781,684		43,781,684
Beginning balance at Dec. 31, 2020		$ 921,572	885,215	$ 44	915,658	(141,521)	36,357
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		41,256	39,797			39,797	1,459
Contributions from non-controlling interests		1,517					1,517
Dividends	[2]	(13,334)	(13,134)			(13,134)	(200)
Dividends, Preferred Stock, Cash	[3]	(1,941)	(1,941)			(1,941)
Distributions to non-controlling interests		(5,923)					(5,923)
Adjustment to non-controlling interests			(307)		(307)		307
Share-based long term incentive plan unit awards		$ 229	226		226		3
Ending balance (in shares) at Mar. 31, 2021		43,781,684		43,781,684
Ending balance at Mar. 31, 2021		$ 943,376	909,856	$ 44	915,577	(116,799)	33,520
Beginning balance (in shares) at Dec. 31, 2020		43,781,684		43,781,684
Beginning balance at Dec. 31, 2020		$ 921,572	885,215	$ 44	915,658	(141,521)	36,357
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 77,725
Stock Issued During Period, Shares, New Issues		0
Shares Issued As Payment of Incentive Fee, Shares		0
Repurchase of shares of common stock (in shares)		0
Ending balance (in shares) at Jun. 30, 2021		43,781,684		43,781,684
Ending balance at Jun. 30, 2021		$ 955,104	923,486	$ 44	915,817	(103,409)	31,618
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Dividends declared (in usd per share)		$ 0.74
Preferred Stock, Dividends Per Share, Declared		$ 0.84375
Preferred Stock, Value, Outstanding		$ 111,034
Beginning balance (in shares) at Mar. 31, 2021		43,781,684		43,781,684
Beginning balance at Mar. 31, 2021		$ 943,376	909,856	$ 44	915,577	(116,799)	33,520
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 36,469	34,595			34,595	1,874
Stock Issued During Period, Shares, New Issues		0
Shares Issued As Payment of Incentive Fee, Shares		0
Contributions from non-controlling interests		$ 5,931					5,931
Dividends	[2]	(19,563)	(19,265)			(19,265)	(298)
Dividends, Preferred Stock, Cash	[3]	(1,940)	(1,940)			(1,940)
Distributions to non-controlling interests		$ (9,413)					(9,413)
Repurchase of shares of common stock (in shares)		0
Share-based long term incentive plan unit awards		$ 244	240		240		4
Ending balance (in shares) at Jun. 30, 2021		43,781,684		43,781,684
Ending balance at Jun. 30, 2021		$ 955,104	$ 923,486	$ 44	$ 915,817	$ (103,409)	$ 31,618
CHANGE IN SHAREHOLDERS’ EQUITY RESULTING FROM OPERATIONS
Dividends declared (in usd per share)		$ 0.44
Preferred Stock, Dividends Per Share, Declared		$ 0.421875
Preferred Stock, Value, Outstanding		$ 111,034

[1] Net of underwriters' discounts and commissions and offering costs.

[2] For the three-month periods ended June 30, 2021 and 2020, dividends totaling $0.44 and $0.25, respectively, per share of common stock and convertible unit outstanding, were declared. For the six-month periods ended June 30, 2021 and 2020, dividends totaling $0.74 and $0.70, respectively, per share of common stock and convertible unit outstanding, were declared.

[3] For the three- and six-month periods ended June 30, 2021 dividends totaling $0.421875 and $0.84375 per share of preferred stock was declared. For the three- and six-month periods ended June 30, 2020 dividends totaling $0.421875 per share of preferred stock was declared.