Common Stock and Preferred Stock - Narrative (Details) - Series A Cumulative Perpetual Preferred Stock - USD ($) $ / shares in Units, $ in Millions		1 Months Ended						3 Months Ended	12 Months Ended
	Aug. 21, 2020	Mar. 31, 2022	Feb. 28, 2022	Jan. 31, 2022	Mar. 31, 2021	Feb. 28, 2021	Jan. 31, 2021	Mar. 31, 2022	Dec. 31, 2020
Class of Stock [Line Items]
Preferred stock issued (in shares)									3,770,265
Preferred stock, dividend rate	9.50%							9.50%	9.50%
Preferred stock, redemption price (in dollars per share)									$ 25.00
Preferred stock, liquidation preference (in dollars per share)		$ 25.00						$ 25.00
Preferred stock, liquidation preference, per annum (in dollars per share)		$ 2.375						2.375
Preferred stock, dividend rate (in dollars per share)								$ 0.593750
Cash payment of preferred stock dividends		$ 2.2	$ 2.2	$ 2.2	$ 2.2	$ 2.2	$ 2.2
Preferred stock, undeclared dividends		$ 0.7						$ 0.7