Equity and Earnings per Common Share, Common and Preferred Stock (Details) - $ / shares	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Class of Stock Disclosures [Abstract]
Date of conducting IPO and concurrent private placement of common stock	Oct. 09, 2013
Series A Preferred Stock [Member]
Class of Stock Disclosures [Abstract]
Preferred stock dividend rate	8.20%
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Cash redemption price (in dollars per share)	$ 25.00
Shares issued upon conversion, preferred stock (in shares)	2.62881
Percentage of cash dividends rate	8.20%
Liquidation preference per share (in dollars per share)	$ 25.00
Cumulative cash dividends (in dollars per share)	2.05
Series B Preferred Stock [Member]
Class of Stock Disclosures [Abstract]
Preferred stock, par value (in dollars per share)	0.01	$ 0.01
Cash redemption price (in dollars per share)	$ 25.00
Shares issued upon conversion, preferred stock (in shares)	2.68962
Percentage of offering of fixed-to-floating rate cumulative redeemable stock	8.25%
Series B Preferred Stock [Member] | LIBOR [Member]
Class of Stock Disclosures [Abstract]
Shares issued upon conversion, preferred stock (in shares)	2.0625
Liquidation preference per share (in dollars per share)	$ 25.00
Percentage of offering of fixed-to-floating rate cumulative redeemable stock	8.25%
Term of floating rate	3 months
Basis spread on variable rate	5.631%