Loans (Details 7) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Numbers	Dec. 31, 2013 Numbers	Dec. 31, 2012 Numbers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	16	5	7
Troubled Debt Restructurings, Recorded Investment	$ 2,020	$ 940	$ 1,196
TDRs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	67	57	282
Troubled Debt Restructurings, Recorded Investment	6,532	6,084	29,035
TDRs [Member] | Residential Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	18	10	87
Troubled Debt Restructurings, Recorded Investment	1,726	752	6,052
TDRs [Member] | Residential Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	3	5	8
Troubled Debt Restructurings, Recorded Investment	517	390	666
TDRs [Member] | Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	2	9	9
Troubled Debt Restructurings, Recorded Investment	27	714	3,859
TDRs [Member] | Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	3	2	13
Troubled Debt Restructurings, Recorded Investment	403	1,364	13,942
TDRs [Member] | Agriculture Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	0	2	3
Troubled Debt Restructurings, Recorded Investment	0	269	474
TDRs [Member] | Commercial Real Estate Other Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	0	3	1
Troubled Debt Restructurings, Recorded Investment	0	417	59
TDRs [Member] | Other Commercial Working Capital [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	4	3	0
Troubled Debt Restructurings, Recorded Investment	1,353	662	0
TDRs [Member] | Home Equity and Home Improvement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	17	15	127
Troubled Debt Restructurings, Recorded Investment	471	561	2,663
TDRs [Member] | Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans	4	3	27
Troubled Debt Restructurings, Recorded Investment	$ 15	$ 15	$ 124