Derivative Instruments and Hedging Activities - Interest Rate Swap Agreements And Fair Value Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Not Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Derivative asset	$ 8,733	$ 7,506	$ 8,508
Derivative liability	8,733	7,506	8,508
Notional amount	124,350	127,763	134,406
Designated as Hedging Instrument | Fair Value Swap
Derivative [Line Items]
Derivative asset	885	0	0
Derivative liability	0	0	0
Notional amount	$ 300,000	$ 0	$ 0