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Loan and Lease Financings (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Loan and Lease Financings
Recorded investment in loans and leases	$ 4,031,975	$ 3,994,692
Residential real estate and home equity and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	613,343	612,608
Residential real estate and home equity
Loan and Lease Financings
Recorded investment in loans and leases	466,450	464,129
Consumer
Loan and Lease Financings
Recorded investment in loans and leases	146,893	148,479
Performing | Residential real estate and home equity and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	610,043	610,416
Performing | Residential real estate and home equity
Loan and Lease Financings
Recorded investment in loans and leases	463,905	462,236
Performing | Consumer
Loan and Lease Financings
Recorded investment in loans and leases	$ 146,138	148,180
Nonperforming
Loan and Lease Financings
Classification of nonperforming loans, threshold period past due	90 days
Nonperforming | Residential real estate and home equity and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	$ 3,300	2,192
Nonperforming | Residential real estate and home equity
Loan and Lease Financings
Recorded investment in loans and leases	2,545	1,893
Nonperforming | Consumer
Loan and Lease Financings
Recorded investment in loans and leases	$ 755	$ 299

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+ References

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5074-111524

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