Derivative Financial Instruments - Effect of Master Netting Arrangements on Derivative Assets and Liabilities in the Consolidated Statements of Condition (Details) - Interest Rate Swap [Member] - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Interest Rate Swaps, Gross Amount of Recognized Assets	$ 104,576	$ 74,586
Interest Rate Swaps, Gross Amount Offset in the Statement of Financial Condition	0	0
Interest Rate Swaps, Net Amount of Assets Presented in the Statement of Financial Condition	104,576	74,586
Interest Rate Swaps, Cash Collateral	(110,755)	(72,185)
Interest Rate Swaps, Net Amount	(6,179)	2,401
Interest Rate Swaps, Gross Amount of Recognized Liabilities	22,016	18,407
Interest Rate Swaps, Gross Amount Offset in the Statement of Financial Condition	0	0
Interest Rate Swaps, Net Amount of Liabilities Presented in the Statement of Financial Condition	22,016	18,407
Interest Rate Swaps, Net Amount	$ 22,016	$ 18,407