CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands									3 Months Ended				9 Months Ended
	Sep. 15, 2021	Aug. 26, 2021	Jun. 15, 2021	May 24, 2021	Mar. 12, 2021	Feb. 19, 2021	Feb. 28, 2020	Apr. 15, 2013	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Common stock, cash dividends declared (in dollars per share)									$ 0.10	$ 0.10	$ 0.075	$ 0.05
Series C Preferred Stock
Preferred Stock, dividend rate													6.50%
Common stock, cash dividends declared (in dollars per share)	$ 0.100		$ 0.100		$ 0.075
Dividend declared per share, preferred stock (in dollars per share)		$ 0.40625		$ 0.40625		$ 0.40625			0.40625	0.40625	0.40625	0.93889
Series B Preferred Stock
Preferred Stock, dividend rate													7.50%
Dividend declared per share, preferred stock (in dollars per share)		$ 0.46875		$ 0.46875		$ 0.46875			0.46875	$ 0.46875	$ 0.46875	1.40625
Preferred Stock | Series C Preferred Stock
Preferred Stock, dividend rate							6.50%						6.50%	6.50%
Preferred Stock, liquidation preference per share (in dollars per share)							$ 25.00		25.00			25.00	$ 25.00	$ 25.00
Preferred Stock | Series B Preferred Stock
Preferred Stock, dividend rate								7.50%					7.50%	7.50%
Preferred Stock, liquidation preference per share (in dollars per share)								$ 25.00	$ 25.00			$ 25.00	$ 25.00	$ 25.00
Common Stock
Adjustments related to tax withholding for share-based compensation													$ 799	$ 2,700
Shares paid for tax withholding for share based compensation (in shares)													213,123	337,026