Repurchase Agreements (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021 USD ($) Security	Dec. 31, 2020 USD ($) Security
Repurchase Agreements [Abstract]
Weighted average of remaining maturities days	41 days	28 days
Repurchase Agreement Characteristics Remaining Maturities [Abstract]
Less than one month, repurchase agreements	$ 400,417	$ 482,319
One to three months, repurchase agreements	496,630	667,659
Total repurchase agreements	$ 897,047	$ 1,149,978
Repurchase Agreement Characteristics, Weighted Average Rates [Abstract]
Less than one month, weighted average rate	0.10%	0.23%
One to three months, weighted average rate	0.11%	0.23%
Weighted average rate	0.11%	0.23%
Number of overnight or demand securities | Security	0	0