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 ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	$ 27,464	$ 19,819	$ 19,520	$ 20,425
Charge-offs	(505)	(1,099)	(1,454)	(1,162)
Recoveries	23	101	264	294
Net (charge-offs) recoveries	(482)	(998)	(1,190)	(868)
Provision for credit loss	3,835	1,349	12,487	613
Allowance for loan and lease losses - end	30,817	20,170	30,817	20,170
Total commercial real estate
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	16,438	11,269	10,852	11,662
Charge-offs	0	0	(27)	0
Recoveries	0	1	3	74
Net (charge-offs) recoveries	0	1	(24)	74
Provision for credit loss	3,742	(132)	9,352	(598)
Allowance for loan and lease losses - end	20,180	11,138	20,180	11,138
Total commercial and Industrial
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	10,179	7,892	8,078	8,079
Charge-offs	(505)	(1,097)	(1,414)	(1,158)
Recoveries	21	99	259	191
Net (charge-offs) recoveries	(484)	(998)	(1,155)	(967)
Provision for credit loss	127	1,517	2,899	1,299
Allowance for loan and lease losses - end	9,822	8,411	9,822	8,411
Total consumer and other
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	847	658	590	684
Charge-offs	0	(2)	(13)	(4)
Recoveries	2	1	2	29
Net (charge-offs) recoveries	2	(1)	(11)	25
Provision for credit loss	(34)	(36)	236	(88)
Allowance for loan and lease losses - end	$ 815	$ 621	$ 815	$ 621

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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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, after recoveries, of loans and leases that have been written-off.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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