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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Allowance for credit losses:
Allowance for loan and lease losses - begin				$ 20,425				$ 18,763	$ 20,425	$ 18,763
Charge-offs									(3,356)	(6,101)
Recoveries									366	2,271
Net (charge-offs) recoveries									(2,990)	(3,830)
Provision for credit loss	$ 1,472	$ 1,349	$ (784)	49	$ 983	$ (546)	$ 2,579	2,476	2,085	5,492
Allowance for loan and lease losses - end	19,520				20,425				19,520	20,425
Commercial real estate:
Allowance for credit losses:
Allowance for loan and lease losses - begin				11,662				10,131	11,662	10,131
Charge-offs									0	(4,501)
Recoveries									75	174
Net (charge-offs) recoveries									75	(4,327)
Provision for credit loss									(885)	5,858
Allowance for loan and lease losses - end	10,852				11,662				10,852	11,662
Commercial and Industrial Loans and Leases Receivable [Member]
Allowance for credit losses:
Allowance for loan and lease losses - begin				8,079				8,225	8,079	8,225
Charge-offs									(3,347)	(1,545)
Recoveries									262	2,023
Net (charge-offs) recoveries									(3,085)	478
Provision for credit loss									3,084	(624)
Allowance for loan and lease losses - end	8,078				8,079				8,078	8,079
Consumer and other:
Allowance for credit losses:
Allowance for loan and lease losses - begin				$ 684				$ 407	684	407
Charge-offs									(9)	(55)
Recoveries									29	74
Net (charge-offs) recoveries									20	19
Provision for credit loss									(114)	258
Allowance for loan and lease losses - end	$ 590				$ 684				$ 590	$ 684

X

- Definition

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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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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