Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net increase (decrease) in shareholders' equity resulting from operations
Net income (loss) attributable to common stockholders	$ 34,271	$ 20,564	$ 32,655	$ 37,856	$ 63,162	$ 46,203	$ 37,278	$ (129,398)	$ 125,346	$ 17,245	$ 56,467
Add: Net income (loss) attributable to Convertible Non-controlling Interests									1,783	(3)	1,305
Net income (loss) related to common stockholders and Convertible Non-controlling Interests									127,129	17,242	57,772
Dividends Paid:
Dividends									(82,224)	(56,023)	(59,824)
Undistributed (Distributed in excess of) earnings:
Total undistributed (distributed in excess of) earnings									$ 44,905	$ (38,781)	$ (2,052)
Weighted average shares outstanding (basic and diluted):
Weighted average shares outstanding (basic and diluted) (in shares)									49,214,931	44,121,581	32,800,224
Basic earnings per share of common stock:
Distributed (in usd per share)									$ 1.64	$ 1.26	$ 1.81
Undistributed (Distributed in excess of) (in usd per share)									0.94	(0.87)	(0.05)
Basic earnings per common share (in usd per share)									2.58	0.39	1.76
Diluted earnings per share of common stock:
Distributed (in usd per share)									1.64	1.26	1.81
Undistributed (Distributed in excess of) (usd per share)									0.94	(0.87)	(0.05)
Diluted earnings per common share (in usd per share)									$ 2.58	$ 0.39	$ 1.76
Net increase (decrease) in equity resulting from operations									$ 5,300	$ 3,400	$ 3,900
Net increase (decrease) in equity resulting from operations									5,300	3,400	3,900
Common Stock
Dividends Paid:
Dividends									(81,104)	(55,211)	(58,499)
Undistributed (Distributed in excess of) earnings:
Total undistributed (distributed in excess of) earnings									$ 44,242	$ (37,966)	$ (2,032)
Weighted average shares outstanding (basic and diluted):
Weighted average shares outstanding (basic and diluted) (in shares)									48,535,221	43,486,336	32,067,768
Non-controlling Interest
Dividends Paid:
Dividends									$ (1,120)	$ (812)	$ (1,325)
Undistributed (Distributed in excess of) earnings:
Total undistributed (distributed in excess of) earnings									$ 663	$ (815)	$ (20)
Weighted average shares outstanding (basic and diluted):
Weighted average shares outstanding (basic and diluted) (in shares)									679,710	635,245	732,456