Repurchase Agreements - Remaining Term to Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 5,381,104	$ 2,644,405
Weighted Average Rate	5.59%	4.18%
WAVG Original Term to Maturity	89	84
Less than 30 days
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 2,855,917	$ 858,161
Weighted Average Rate	5.61%	4.44%
WAVG Original Term to Maturity	92	42
30 to 90 days
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 2,525,187	$ 1,786,244
Weighted Average Rate	5.58%	4.06%
WAVG Original Term to Maturity	86	104