Derivative Financial Instruments - Offsetting of Derivative Assets - Derivative Assets, Financial Assets, and Collateral Held by Counterparty (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Total
Net amounts of assets presented in the balance sheet	$ 113,076	$ 179,079
Net amount		179,079
RJ O' Brien
Total
Net amounts of assets presented in the balance sheet	15,842	74,010
Net amount		74,010
Goldman Sachs
Total
Net amounts of assets presented in the balance sheet		8,473
Net amount		8,473
Morgan Stanley Bank, N.A.
Total
Net amounts of assets presented in the balance sheet	15,260
Bank of America, N.A.
Total
Net amounts of assets presented in the balance sheet	8,221
Citibank, N.A.
Total
Net amounts of assets presented in the balance sheet	657	2,947
Net amount		2,947
Bank of Montreal
Total
Net amounts of assets presented in the balance sheet	3,781	137
Net amount		137
Mizuho Bank, Ltd.
Total
Net amounts of assets presented in the balance sheet	1,683	1,467
Net amount		1,467
Others
Total
Net amounts of assets presented in the balance sheet	6,074	1,575
Net amount		1,575
Athene Annuity & Life Assurance Company
Total
Net amounts of assets presented in the balance sheet	2,352
BNP Paribas
Total
Net amounts of assets presented in the balance sheet	2,260	157
Net amount		157
Interest rate lock commitments
Total
Net amounts of assets presented in the balance sheet	$ 56,946	90,313
Net amount		$ 90,313