Allowance for Loan and Lease Loss and Credit Quality (Schedule Of Average Recorded Investment And Interest Income Recognized) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Impaired [Line Items]
Average recorded investment	$ 55,959	$ 55,408
Interest income recognized	231	373
Commercial real estate \| Non-owner occupied term, net
Financing Receivable, Impaired [Line Items]
Average recorded investment	14,620	15,735
Interest income recognized	102	149
Commercial real estate \| Owner occupied term, net
Financing Receivable, Impaired [Line Items]
Average recorded investment	11,461	8,952
Interest income recognized	10	61
Commercial real estate \| Multifamily, net
Financing Receivable, Impaired [Line Items]
Average recorded investment	3,868	3,939
Interest income recognized	30	30
Commercial real estate \| Construction & development, net
Financing Receivable, Impaired [Line Items]
Average recorded investment	0	1,312
Interest income recognized	0	11
Commercial real estate \| Residential development, net
Financing Receivable, Impaired [Line Items]
Average recorded investment	0	7,445
Interest income recognized	0	75
Commercial \| Term, net
Financing Receivable, Impaired [Line Items]
Average recorded investment	21,212	12,827
Interest income recognized	89	35
Commercial \| Lines of credit & other, net
Financing Receivable, Impaired [Line Items]
Average recorded investment	4,726	4,966
Interest income recognized	0	12
Commercial \| Leases and equipment finance, net
Financing Receivable, Impaired [Line Items]
Average recorded investment	72	232
Interest income recognized	$ 0	$ 0

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- Definition

Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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- Definition

Amount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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