Credit Quality (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Financing receivables on nonaccrual status
Financing receivables on nonaccrual status	$ 5,697	$ 5,331
Consumer and credit card [Member]
Financing receivables on nonaccrual status
Financing receivables on nonaccrual status	0	0
Commercial and industrial [Member]
Financing receivables on nonaccrual status
Financing receivables on nonaccrual status	1,794	2,815
Commercial real estate [Member]
Financing receivables on nonaccrual status
Financing receivables on nonaccrual status	3,632	2,195
Residential Real Estate and Home Equity [Member]
Financing receivables on nonaccrual status
Financing receivables on nonaccrual status	$ 271	$ 321