Securities (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) item security	Dec. 31, 2021 USD ($) security	Dec. 31, 2020 USD ($)
Number of securities in portfolio | security	4	3
Accrued interest receivable on held-to-maturity securities	$ 100,000	$ 100,000
Allowance for credit loss	0
Accrued interest receivable on available-for-sale debt securities	3,700,000	1,500,000
Mortgage Backed Securities Available for Sale Amortized Cost	$ 56,600,000	340,800,000	$ 308,100,000
Number of investment securities | item	1
Payment investment amount	$ 21,000,000.0
Proceeds from Sale of Debt Securities, Available-for-sale	84,200,000	45,000,000.0	$ 221,000,000.0
Held-to-maturity Securities
Specific reserve for outstanding balance of financing receivable in active forbearance	1,100,000	900,000
Non-qualified Deferred Compensation Plan [Member] | Other Assets [Member]
Deferred Compensation Plan, Amounts Held in Rabbi Trust	24,300,000	26,300,000
Collateralized Mortgage Obligations by Commercial Real Estate [Member]
Allowance for credit loss	$ 0	$ 0