Short-Term Borrowings and Long-Term Debt (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Early repayment of senior debt	$ 12,000	$ 15,000
Repayments of long-term debt	200
Debt prepayment fees	15	100
Debt conversion, original debt, amount	0	$ 200
Percentage of Bank's long-term debt at fixed rate		1.89%
Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, fair value of amount outstanding	63,000
Other Commercial Banks
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	82,000	$ 32,000
Line of Credit | Line of Credit
Debt Instrument [Line Items]
Line of credit facility, fair value of amount outstanding	79,000	0
Federal Home Loan Bank Borrowings
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	490,500	530,500
Loans and securities pledged as collateral	822,900	723,100
FHLB lendable collateral	632,500	605,700
FHLB lendable pledged collateral	239,700	192,000
Line of credit facility, current borrowing capacity	97,700	116,800
Line of credit facility, fair value of amount outstanding	79,000	12,200
FHLB lendable unpledged collateral	392,800	413,700
Federal Home Loan Bank Borrowings | Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, fair value of amount outstanding		63,000
Borrower in Custody | Federal Reserve Bank Of Richmond
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	7,200	3,300
Borrower in Custody or Unsecured and Secured Commercial Lines
Debt Instrument [Line Items]
Amount outstanding	$ 9,100	6,000
Maximum
Debt Instrument [Line Items]
Initial period after which debt callable	10 years
Minimum
Debt Instrument [Line Items]
Initial period after which debt callable	3 months
Advances and Security Agreement
Debt Instrument [Line Items]
Percentage of assets limited to maximum borrowing capacity	30.00%
Line of credit facility, maximum borrowing capacity	$ 722,500	$ 697,800