Loan and Lease Financings (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Loan and Lease Financings
Recorded investment in loans and leases	$ 3,994,692	$ 3,688,574
Residential real estate and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	612,608	588,569
Residential real estate
Loan and Lease Financings
Recorded investment in loans and leases	464,129	445,759
Consumer
Loan and Lease Financings
Recorded investment in loans and leases	148,479	142,810
Performing | Residential real estate and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	610,416	585,394
Performing | Residential real estate
Loan and Lease Financings
Recorded investment in loans and leases	462,236	442,918
Performing | Consumer
Loan and Lease Financings
Recorded investment in loans and leases	$ 148,180	142,476
Nonperforming
Loan and Lease Financings
Classification of nonperforming loans, threshold period past due	90 days
Nonperforming | Residential real estate and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	$ 2,192	3,175
Nonperforming | Residential real estate
Loan and Lease Financings
Recorded investment in loans and leases	1,893	2,841
Nonperforming | Consumer
Loan and Lease Financings
Recorded investment in loans and leases	$ 299	$ 334