Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net increase (decrease) in shareholders' equity resulting from operations
Net income (loss) attributable to common stockholders	$ 20,564	$ 46,203	$ 91,075	$ (45,917)
Add: Net income (loss) attributable to Convertible Non-controlling Interests	281	647	1,363	(916)
Net income (loss) related to common stockholders and Convertible Non-controlling Interests	20,845	46,850	92,438	(46,833)
Dividends Paid:
Dividends	(23,161)	(11,987)	(56,058)	(43,141)
Undistributed (Distributed in excess of) earnings:
Total undistributed (distributed in excess of) earnings	$ (2,316)	$ 34,863	$ 36,380	$ (89,974)
Weighted average shares outstanding (basic and diluted):
Weighted average shares outstanding (basic and diluted) (in shares)	50,533,333	44,392,453	46,502,749	44,023,004
Basic earnings per share of common stock:
Distributed (in usd per share)	$ 0.45	$ 0.27	$ 1.19	$ 0.97
Undistributed (Distributed in excess of) (in usd per share)	(0.04)	0.79	0.80	(2.03)
Basic earnings per common share (in usd per share)	0.41	1.06	1.99	(1.06)
Diluted earnings per share of common stock:
Distributed (in usd per share)	0.45	0.27	1.19	0.97
Undistributed (Distributed in excess of) (usd per share)	(0.04)	0.79	0.80	(2.03)
Diluted earnings per common share (in usd per share)	$ 0.41	$ 1.06	$ 1.99	$ (1.06)
Net increase (decrease) in equity resulting from operations	$ 1,200	$ 900	$ 3,400	$ 2,800
Net increase (decrease) in equity resulting from operations	1,200	900	3,400	2,800
Common Stock
Dividends Paid:
Dividends	(22,854)	(11,821)	(55,253)	(42,514)
Undistributed (Distributed in excess of) earnings:
Total undistributed (distributed in excess of) earnings	$ (2,290)	$ 34,382	$ 35,822	$ (88,431)
Weighted average shares outstanding (basic and diluted):
Weighted average shares outstanding (basic and diluted) (in shares)	49,853,267	43,779,134	45,827,785	43,387,168
Non-controlling Interest
Dividends Paid:
Dividends	$ (307)	$ (166)	$ (805)	$ (627)
Undistributed (Distributed in excess of) earnings:
Total undistributed (distributed in excess of) earnings	$ (26)	$ 481	$ 558	$ (1,543)
Weighted average shares outstanding (basic and diluted):
Weighted average shares outstanding (basic and diluted) (in shares)	680,066	613,319	674,964	635,836