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
Mar. 31, 2021	Mar. 31, 2020
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	$ 28,521	$ 19,520
Charge-offs	(144)	(131)
Recoveries	2,673	177
Net (charge-offs) recoveries	2,529	46
Provision for credit loss	(2,068)	3,182
Allowance for loan and lease losses - end	28,982	22,748
Total commercial real estate
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	17,157	10,852
Charge-offs	0	0
Recoveries	2,219	1
Net (charge-offs) recoveries	2,219	1
Provision for credit loss	(931)	1,744
Allowance for loan and lease losses - end	18,445	12,597
Total commercial and Industrial
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	10,593	8,078
Charge-offs	(144)	(125)
Recoveries	453	176
Net (charge-offs) recoveries	309	51
Provision for credit loss	(1,358)	1,193
Allowance for loan and lease losses - end	9,544	9,322
Total consumer and other
Allowance for credit losses roll-forward
Allowance for loan and lease losses - begin	771	590
Charge-offs	0	(6)
Recoveries	1	0
Net (charge-offs) recoveries	1	(6)
Provision for credit loss	221	245
Allowance for loan and lease losses - end	$ 993	$ 829

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.

+ References

No definition available.

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
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Amount of expense related to estimated loss from loan and lease transactions.

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