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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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for credit losses:
Allowance for loan and lease losses - begin				$ 18,763				$ 20,912	$ 18,763	$ 20,912	$ 16,316
Charge-offs									(6,101)	(8,840)	(3,594)
Recoveries									2,271	519	372
Net (charge-offs) recoveries									(3,830)	(8,321)	(3,222)
Provision for credit loss	$ (983)	$ 546	$ (2,579)	(2,476)	$ (473)	$ (1,471)	$ (3,656)	(572)	5,492	6,172	7,818
Allowance for loan and lease losses - end	20,425				18,763				20,425	18,763	20,912
Commercial real estate:
Allowance for credit losses:
Allowance for loan and lease losses - begin				10,131				12,384	10,131	12,384	11,220
Charge-offs									(4,501)	(127)	(1,194)
Recoveries									174	153	274
Net (charge-offs) recoveries									(4,327)	26	(920)
Provision for credit loss									5,858	(2,279)	2,084
Allowance for loan and lease losses - end	11,662				10,131				11,662	10,131	12,384
Commercial and Industrial Loans and Leases Receivable [Member]
Allowance for credit losses:
Allowance for loan and lease losses - begin				8,225				7,970	8,225	7,970	4,387
Charge-offs									(1,545)	(8,621)	(2,273)
Recoveries									2,023	323	91
Net (charge-offs) recoveries									478	(8,298)	(2,182)
Provision for credit loss									(624)	8,553	5,765
Allowance for loan and lease losses - end	8,079				8,225				8,079	8,225	7,970
Consumer and other:
Allowance for credit losses:
Allowance for loan and lease losses - begin				$ 407				$ 558	407	558	709
Charge-offs									(55)	(92)	(127)
Recoveries									74	43	7
Net (charge-offs) recoveries									19	(49)	(120)
Provision for credit loss									258	(102)	(31)
Allowance for loan and lease losses - end	$ 684				$ 407				$ 684	$ 407	$ 558

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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