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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Summary of Activity in Allowance for Loan and Lease Losses) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	$ 24,230,000
Charge-offs	(166,000)
Net (charge-offs) recoveries	(59,000)
Allowance for loan and lease losses - end	26,140,000
Off-Balance-Sheet, Credit Loss, Liability	1,410,000		$ 0
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	24,230,000	$ 24,336,000
Financing Receivable, Allowance for Credit Loss, Writeoff		22,000
Financing Receivable, Allowance for Credit Loss, Recovery	107,000	210,000
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery		188,000
Financing Receivable, Credit Loss, Expense (Reversal)	1,561,000	(855,000)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	26,140,000	23,669,000
Financing Receivable, Allowance for Credit Loss, Including	27,550,000		24,230,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	24,518,000		22,580,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,622,000		1,650,000
Financing Receivable, Collectively Evaluated for Impairment	2,535,864,000		2,439,400,000
Financing Receivable, Individually Evaluated for Impairment	3,412,000		3,815,000
Loans and Leases Receivable, Gross	2,539,276,000		2,443,215,000
Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses roll-forward
Off-Balance-Sheet, Credit Loss, Liability			1,334,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	484,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	1,818,000
Commercial real estate — owner occupied
Allowance for credit losses roll-forward
Allowance for loan and lease losses - end	1,636,000
Off-Balance-Sheet, Credit Loss, Liability	20,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	1,766,000
Financing Receivable, Allowance for Credit Loss, Writeoff	0
Financing Receivable, Allowance for Credit Loss, Recovery	0
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery	0
Financing Receivable, Credit Loss, Expense (Reversal)	94,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	1,636,000
Financing Receivable, Allowance for Credit Loss, Including	1,656,000		1,766,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,636,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0
Financing Receivable, Collectively Evaluated for Impairment	233,725,000
Financing Receivable, Individually Evaluated for Impairment	0
Loans and Leases Receivable, Gross	233,725,000
Commercial real estate — owner occupied | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses roll-forward
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	(218,000)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	(204,000)
Commercial real estate — non-owner occupied
Allowance for credit losses roll-forward
Allowance for loan and lease losses - end	4,915,000
Off-Balance-Sheet, Credit Loss, Liability	51,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	5,108,000
Financing Receivable, Allowance for Credit Loss, Writeoff	0
Financing Receivable, Allowance for Credit Loss, Recovery	1,000
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery	1,000
Financing Receivable, Credit Loss, Expense (Reversal)	99,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	4,915,000
Financing Receivable, Allowance for Credit Loss, Including	4,966,000		5,108,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	4,915,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0
Financing Receivable, Collectively Evaluated for Impairment	675,087,000
Financing Receivable, Individually Evaluated for Impairment	0
Loans and Leases Receivable, Gross	675,087,000
Commercial real estate — non-owner occupied | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses roll-forward
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	(297,000)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	(242,000)
Construction
Allowance for credit losses roll-forward
Allowance for loan and lease losses - end	1,586,000
Off-Balance-Sheet, Credit Loss, Liability	701,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	1,646,000
Financing Receivable, Allowance for Credit Loss, Writeoff	0
Financing Receivable, Allowance for Credit Loss, Recovery	0
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery	0
Financing Receivable, Credit Loss, Expense (Reversal)	(155,000)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	1,586,000
Financing Receivable, Allowance for Credit Loss, Including	2,287,000		1,646,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,586,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0
Financing Receivable, Collectively Evaluated for Impairment	212,916,000
Financing Receivable, Individually Evaluated for Impairment	0
Loans and Leases Receivable, Gross	212,916,000
Construction | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses roll-forward
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	109,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	796,000
Multi-family
Allowance for credit losses roll-forward
Allowance for loan and lease losses - end	2,892,000
Off-Balance-Sheet, Credit Loss, Liability	9,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	2,634,000
Financing Receivable, Allowance for Credit Loss, Writeoff	0
Financing Receivable, Allowance for Credit Loss, Recovery	0
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery	0
Financing Receivable, Credit Loss, Expense (Reversal)	653,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	2,892,000
Financing Receivable, Allowance for Credit Loss, Including	2,901,000		2,634,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,892,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0
Financing Receivable, Collectively Evaluated for Impairment	384,043,000
Financing Receivable, Individually Evaluated for Impairment	0
Loans and Leases Receivable, Gross	384,043,000
Multi-family | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses roll-forward
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	(391,000)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	(386,000)
1-4 family
Allowance for credit losses roll-forward
Allowance for loan and lease losses - end	201,000
Off-Balance-Sheet, Credit Loss, Liability	20,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	207,000
Financing Receivable, Allowance for Credit Loss, Writeoff	0
Financing Receivable, Allowance for Credit Loss, Recovery	0
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery	0
Financing Receivable, Credit Loss, Expense (Reversal)	59,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	201,000
Financing Receivable, Allowance for Credit Loss, Including	221,000		207,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	201,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0
Financing Receivable, Collectively Evaluated for Impairment	23,376,000
Financing Receivable, Individually Evaluated for Impairment	28,000
Loans and Leases Receivable, Gross	23,404,000
1-4 family | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses roll-forward
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	(60,000)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	(45,000)
Commercial and industrial
Allowance for credit losses roll-forward
Charge-offs	(166,000)
Net (charge-offs) recoveries	(71,000)
Allowance for loan and lease losses - end	14,348,000
Off-Balance-Sheet, Credit Loss, Liability	557,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	12,403,000	8,413,000
Financing Receivable, Allowance for Credit Loss, Writeoff		22,000
Financing Receivable, Allowance for Credit Loss, Recovery	95,000	84,000
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery		62,000
Financing Receivable, Credit Loss, Expense (Reversal)	700,000	437,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	14,348,000	8,912,000
Financing Receivable, Allowance for Credit Loss, Including	14,905,000		12,403,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	12,726,000		10,753,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,622,000		1,650,000
Financing Receivable, Collectively Evaluated for Impairment	959,944,000		849,542,000
Financing Receivable, Individually Evaluated for Impairment	3,384,000		3,785,000
Loans and Leases Receivable, Gross	963,328,000		853,327,000
Commercial and industrial | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses roll-forward
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	1,359,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	1,873,000
Total consumer and other
Allowance for credit losses roll-forward
Charge-offs	0
Net (charge-offs) recoveries	11,000
Allowance for loan and lease losses - end	562,000
Off-Balance-Sheet, Credit Loss, Liability	52,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	466,000	813,000
Financing Receivable, Allowance for Credit Loss, Writeoff		0
Financing Receivable, Allowance for Credit Loss, Recovery	11,000	10,000
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery		10,000
Financing Receivable, Credit Loss, Expense (Reversal)	111,000	169,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance		992,000
Financing Receivable, Allowance for Credit Loss, Including	614,000		466,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment			466,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment			0
Financing Receivable, Collectively Evaluated for Impairment			47,938,000
Financing Receivable, Individually Evaluated for Impairment			0
Loans and Leases Receivable, Gross			47,938,000
Total consumer and other | Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses roll-forward
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance	26,000
Total commercial real estate
Allowance for credit losses roll-forward
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Beginning Balance	$ 11,361,000	15,110,000
Financing Receivable, Allowance for Credit Loss, Writeoff		0
Financing Receivable, Allowance for Credit Loss, Recovery		116,000
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery		116,000
Financing Receivable, Credit Loss, Expense (Reversal)		(1,461,000)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Ending Balance		$ 13,765,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment			11,361,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment			0
Financing Receivable, Collectively Evaluated for Impairment			1,541,920,000
Financing Receivable, Individually Evaluated for Impairment			30,000
Loans and Leases Receivable, Gross			$ 1,541,950,000

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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