Allowance for Loan Losses (Impaired Financing Receivables) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			$ 11,128
Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			6,052
Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			2,554
Construction Loans
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			0
Home equity lines
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			281
Installment
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			1,054
Credit Card Receivable
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			243
Residential Mortgages
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Related Allowance			944
Originated Loans
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 61,085		50,141
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	65,881		57,809
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	60,272		55,051
Impaired Financing Receivable, with Related Allowance, Recorded Investment	105,883		78,897
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	114,922		85,211
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	13,454	$ 11,626	14,349
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	78,480		62,887
Impaired Financing Receivable, Recorded Investment	166,968	124,035	129,038
Impaired Financing Receivable, Unpaid Principal Balance	180,803	143,140	143,020
Impaired Financing Receivable, Related Allowance	13,454	11,626	14,349
Impaired Financing Receivable, Average Recorded Investment	138,752	109,353	117,938
Originated Loans \| Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	19,489	28,076	21,066
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	22,663	37,358	23,854
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	29,022	27,238	27,215
Impaired Financing Receivable, with Related Allowance, Recorded Investment	43,218	17,893	22,752
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	51,933	18,062	28,881
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	10,447	9,117	11,837
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	21,305	7,199	11,284
Originated Loans \| Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	26,058	11,482	15,465
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	24,696	17,585	17,456
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	17,119	12,983	13,031
Impaired Financing Receivable, with Related Allowance, Recorded Investment	3,481	590	1,149
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	3,563	593	1,173
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	507	151	128
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,999	600	3,037
Originated Loans \| Construction Loans
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	512	0	0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	512	0	0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	102	0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0	0	0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0	0	0
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	0	0
Originated Loans \| Leases
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	1,162
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0	1,162
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	598
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0
Originated Loans \| Home equity lines
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		884
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		1,132
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		906
Impaired Financing Receivable, with Related Allowance, Recorded Investment		6,537
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		6,537
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	169	217
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		6,684
Originated Loans \| Installment
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2,366	1,678	1,369
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,697	2,183	1,658
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,636	1,753	1,807
Impaired Financing Receivable, with Related Allowance, Recorded Investment	39,906	30,249	35,535
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	40,033	30,302	35,592
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,149	1,001	1,009
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	35,473	25,722	28,808
Originated Loans \| Home Equity Line of Credit
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	695		670
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	948		919
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	694		999
Impaired Financing Receivable, with Related Allowance, Recorded Investment	7,179		6,410
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	7,180		6,411
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		217	188
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	6,803		6,382
Originated Loans \| Credit Card Receivable
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	15	19	21
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	15	19	21
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	19	26	20
Impaired Financing Receivable, with Related Allowance, Recorded Investment	664	768	696
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	664	768	696
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	201	250	243
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	699	823	757
Originated Loans \| Residential Mortgages
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	11,950	12,047	11,550
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	14,350	14,700	13,901
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	11,680	12,146	11,979
Impaired Financing Receivable, with Related Allowance, Recorded Investment	11,435	12,650	12,355
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	11,549	12,739	12,458
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	981	890	944
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	$ 12,201	12,675	$ 12,619
Originated Loans \| Total impaired loans with no related allowance
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		55,348
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		74,139
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		55,650
Originated Loans \| Total impaired loans with a related allowance
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment		68,687
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		69,001
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment		11,626
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		$ 53,703

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a 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)(1)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524

Reference 2: 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=49124121&loc=d3e5258-111524

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a 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 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953550-111524

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Amount of allowance for credit losses related to recorded investment.

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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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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=49124121&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=49124121&loc=d3e5212-111524

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

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