Financial Derivatives (Futures) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Fair Value	$ 48,554	$ 6,596
Financial derivatives–assets, at fair value-	65,082	18,894
Derivative Liability	$ 16,528	12,298
Futures
Derivative [Line Items]
Remaining Years to Maturity	2 months 26 days
Financial derivatives–assets, at fair value-	$ 5,794	478
Derivative Liability	131	75
Short | Futures
Derivative [Line Items]
Notional Amount	274,400	219,500
Fair Value	5,663	$ 403
Remaining Years to Maturity		2 months 26 days
Financial Derivatives - Liabilities | Short | U.S. Treasury futures
Derivative [Line Items]
Notional Amount	$ 0	$ 51,400
Remaining Years to Maturity	0 years	2 months 19 days
Derivative Liability	$ 0	$ (39)
Financial Derivatives - Liabilities | Long | U.S. Treasury futures
Derivative [Line Items]
Notional Amount	$ 1,900	$ 1,900
Remaining Years to Maturity	2 months 23 days	2 months 19 days
Derivative Liability	$ (131)	$ (36)
Financial Derivatives - Assets | Short | U.S. Treasury futures
Derivative [Line Items]
Notional Amount	$ 276,300	$ 170,000
Remaining Years to Maturity	2 months 26 days	3 months
Financial derivatives–assets, at fair value-	$ 5,794	$ 478