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Common Stock Dividends and Issuances Text Tags (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Sep. 30, 2021	Dec. 31, 2011	Mar. 31, 2021	Sep. 27, 2021	Feb. 16, 2021	Feb. 01, 2021	Oct. 15, 2020	Oct. 28, 2011
Dividends [Abstract]
Stock Issued During Period, Shares, Other						2,321,286
Conversion of Stock, Shares Converted		475		13,519	1,650	1,208,039
Convertible Preferred Stock, Shares Outstanding (in shares)												45,118
Conversion of Stock, Shares Issued		58,093		1,653,397	201,795
Treasury Stock, Shares, Acquired							2,321,286
Payments for Repurchase of Equity							$ 2,500
Class of Stock [Line Items]
Proceeds from Issuance of Private Placement	$ 4,000	$ 4,400					$ 6,000
Common Stock
Dividends [Abstract]
Stock Issued During Period, Shares, New Issues		157,806	147,227				112,612
Sale of Stock, Price Per Share									$ 8.88	$ 7.75	$ 6.62
Class of Stock [Line Items]
Stock Repurchased and Retired During Period, Shares							180,573
Stock Issued During Period, Shares, New Issues		157,806	147,227				112,612
Sale of Stock, Price Per Share									8.88	7.75	$ 6.62
Series F Preferred Stock
Dividends [Abstract]
Convertible Preferred Stock, Shares Outstanding (in shares)	9,000	5,000			9,000		5,000
Stock Issued During Period, Shares, New Issues	4,000	5,000
Sale of Stock, Price Per Share								$ 1,000	1,000
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	4,000	5,000
Sale of Stock, Price Per Share								$ 1,000	$ 1,000
Series D Preferred Stock
Dividends [Abstract]
Convertible Preferred Stock, Shares Outstanding (in shares)	15,951	17,601			15,951		17,601
Class of Stock [Line Items]
Stock Repurchased and Retired During Period, Shares							13,523
Series E Preferred Stock
Dividends [Abstract]
Convertible Preferred Stock, Shares Outstanding (in shares)	3,177	3,177			3,177		3,177
Stock Issued During Period, Shares, New Issues		3,177
Sale of Stock, Price Per Share										1,000
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues		3,177
Sale of Stock, Price Per Share										$ 1,000

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