Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details 6) (USD $)			3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Total Troubled Debt Restructured Loans item	Jun. 30, 2013 Total Troubled Debt Restructured Loans item	Jun. 30, 2014 Total Troubled Debt Restructured Loans item	Jun. 30, 2013 Total Troubled Debt Restructured Loans item	Jun. 30, 2013 Commercial item	Jun. 30, 2014 Commercial item	Jun. 30, 2013 Commercial item	Jun. 30, 2013 Commercial real estate mortgages item	Jun. 30, 2013 Commercial real estate mortgages item	Jun. 30, 2013 Home equity loans and lines of credit item	Jun. 30, 2014 Variable item	Jun. 30, 2014 Variable item	Jun. 30, 2014 Consumer item	Jun. 30, 2014 Consumer item
Financing Receivable, Impaired
Impaired loans on accrual status	$ 34,700,000	$ 42,100,000
TDR loans	0	52,200,000
Specific Reserves	0	800,000
Number of Contracts			2	7	5	12	6	2	10	1	1	1	1	2	1	1
Pre-Modification Outstanding Principal			4,050,000	7,503,000	8,824,000	9,575,000	6,956,000	4,098,000	8,683,000	547,000	547,000	345,000	4,000,000	4,676,000	50,000	50,000
Period-End Outstanding Principal			4,043,000	7,473,000	8,686,000	8,883,000	6,926,000	3,967,000	8,336,000	547,000	547,000		3,993,000	4,669,000	50,000	50,000
Financial Effects			$ 55,000		$ 55,000								$ 5,000	$ 5,000	$ 50,000	$ 50,000