Loans and Allowance for Loan Losses - Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Nonaccrual Loans	$ 15,681	$ 16,578
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Nonaccrual Loans	7,408	7,884
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Nonaccrual Loans	193	189
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Nonaccrual Loans	3,488	3,803
Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Nonaccrual Loans	3,771	3,900
Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Nonaccrual Loans	568	475
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Nonaccrual Loans	$ 253	$ 327