Loans and Leases (Information on How Loans and Leases were Modified as a TDR) (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2015 USD ($) loan	Dec. 31, 2014 USD ($) loan	Dec. 31, 2013 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		212	262	305
Post-Modification Recorded Investment | $	[1]	$ 49,215	$ 47,031	$ 61,828
Residential Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		27	27	27
Post-Modification Recorded Investment | $	[1]	$ 4,909	$ 3,547	$ 5,219
Residential Portfolio Segment [Member] | Adjusted Interest Rates [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		3	3	8
Post-Modification Recorded Investment | $	[1]	$ 573	$ 448	$ 2,759
Residential Portfolio Segment [Member] | Combination Rate and Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		26	22	45
Post-Modification Recorded Investment | $	[1]	$ 5,315	$ 4,220	$ 8,264
Residential Portfolio Segment [Member] | other concessions [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	[2]	30	55	44
Post-Modification Recorded Investment | $	[1],[2]	$ 4,366	$ 11,791	$ 9,497
Consumer Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		12	19	24
Post-Modification Recorded Investment | $	[1]	$ 1,012	$ 944	$ 1,159
Consumer Portfolio Segment [Member] | Adjusted Interest Rates [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		0	1	4
Post-Modification Recorded Investment | $	[1]	$ 0	$ 51	$ 154
Consumer Portfolio Segment [Member] | Combination Rate and Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		12	6	14
Post-Modification Recorded Investment | $	[1]	$ 945	$ 411	$ 1,504
Consumer Portfolio Segment [Member] | other concessions [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	[2]	68	90	100
Post-Modification Recorded Investment | $	[1],[2]	$ 3,646	$ 4,931	$ 4,247
Commercial Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		3	7	3
Post-Modification Recorded Investment | $	[1]	$ 254	$ 422	$ 7,525
Commercial Portfolio Segment [Member] | Adjusted Interest Rates [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		1	1	0
Post-Modification Recorded Investment | $	[1]	$ 24	$ 25	$ 0
Commercial Portfolio Segment [Member] | Combination Rate and Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		7	22	22
Post-Modification Recorded Investment | $	[1]	$ 5,361	$ 1,212	$ 1,083
Commercial Portfolio Segment [Member] | other concessions [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	[2]	20	6	4
Post-Modification Recorded Investment | $	[1],[2]	$ 22,048	$ 7,431	$ 4,603
Commercial Real Estate Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		1	0	3
Post-Modification Recorded Investment | $	[1]	$ 315	$ 0	$ 226
Commercial Real Estate Portfolio Segment [Member] | Combination Rate and Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		1	2	6
Post-Modification Recorded Investment | $	[1]	$ 42	$ 11,106	$ 15,520
Commercial Real Estate Portfolio Segment [Member] | other concessions [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan	[2]	1	0	1
Post-Modification Recorded Investment | $	[1],[2]	$ 405	$ 0	$ 68
Finance Leases Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans and Leases | loan		0	1	0
Post-Modification Recorded Investment | $	[1]	$ 0	$ 492	$ 0

[1] Post-modification balances approximate pre-modification balances. The aggregate amount of charge-offs as a result of the restructurings was not significant.

[2] Other includes covenant modifications, forbearance, loans discharged under Chapter 7 bankruptcy, and/or other concessions.