Consolidated Balance Sheets (Parenthetical) Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Preferred stock, Shares Authorized (in shares)	50,000,000	50,000,000
Preferred Stock, Shares Outstanding (in shares)	4,460,000	4,460,000
Preferred Stock, Shares Issued	4,460,000	4,460,000
Preferred Stock, Liquidation Preference, Value	$ 111,500	$ 111,500
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	90,000,000	90,000,000
Common Stock, Shares, Issued	36,957,882	36,665,805
Common Stock, Shares, Outstanding	36,957,882	36,665,805
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Pledged Financial Instruments, Not Separately Reported, Securities for Repurchase Agreements	$ 3,119,668	$ 3,011,319
Repurchase agreements	$ 2,952,802	$ 2,849,916