Credit Quality (Details 4) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Consumer Risk
Consumer risk based on payment activity	$ 345,637	$ 317,504
Consumer and Credit Card [Member]
Consumer Risk
Consumer risk based on payment activity	29,277	21,620
Consumer and Credit Card [Member] | Performing [Member]
Consumer Risk
Consumer risk based on payment activity	29,201	21,592
Consumer and Credit Card [Member] | Non-Performing [Member]
Consumer Risk
Consumer risk based on payment activity	76	28
Residential Real Estate and Home Equity [Member]
Consumer Risk
Consumer risk based on payment activity	83,472	72,137
Residential Real Estate and Home Equity [Member] | Performing [Member]
Consumer Risk
Consumer risk based on payment activity	83,201	71,816
Residential Real Estate and Home Equity [Member] | Non-Performing [Member]
Consumer Risk
Consumer risk based on payment activity	$ 271	$ 321