Derivatives and Hedging Activities - Narrative (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) swap	Dec. 31, 2021 USD ($) swap	Dec. 31, 2020 USD ($)
Derivative [Line Items]
Loss on extinguishment of debt	$ 0	$ (2,851,000)	$ (1,158,000)
Accrued interest on derivative, at fair value	22,000	567,000
Net liability position	684,000
Collateral against obligations	760,000
Interest Rate Swap
Derivative [Line Items]
Derivative gains (losses) recorded in the Statements of Income	489,000	115,000	$ (306,000)
FHLB advances | Interest Rate Swap
Derivative [Line Items]
Notional amount of derivative	290,000,000	190,000,000
Not Designated as Hedging Instrument | Currency forward contract - non-designated hedge
Derivative [Line Items]
Notional amount of derivative	0	0
Not Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Notional amount of derivative	$ 205,000,000	$ 183,400,000
Number of commercial banking customers | swap	54	52
Designated as Hedging Instrument | FHLB advances | Interest Rate Swap
Derivative [Line Items]
Notional amount of derivative	$ 290,000,000	$ 190,000,000
Number of interest rate derivatives held | swap	20	14
Derivatives, notional amount discontinued relative to the hedge		$ 210,000,000
Loss on extinguishment of debt		$ 996,000
Designated as Hedging Instrument | Commercial Loan | Interest Rate Swap
Derivative [Line Items]
Notional amount of derivative	$ 100,000,000
Number of interest rate derivatives held | swap	2	0