Credit Quality (Details 4) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Credit Quality Indicators
Consumer risk based on payment activity	$ 382,164	$ 385,444
Consumer and Credit Card [Member]
Credit Quality Indicators
Consumer risk based on payment activity	39,403	37,507
Consumer and Credit Card [Member] | Performing [Member]
Credit Quality Indicators
Consumer risk based on payment activity	39,336	37,387
Consumer and Credit Card [Member] | Non-Performing [Member]
Credit Quality Indicators
Consumer risk based on payment activity	67	120
Residential Real Estate and Home Equity [Member]
Credit Quality Indicators
Consumer risk based on payment activity	134,090	129,650
Residential Real Estate and Home Equity [Member] | Performing [Member]
Credit Quality Indicators
Consumer risk based on payment activity	133,324	128,836
Residential Real Estate and Home Equity [Member] | Non-Performing [Member]
Credit Quality Indicators
Consumer risk based on payment activity	$ 766	$ 814