Loans (Details 7) - TDRs [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) Number	Mar. 31, 2017 USD ($) Number
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	10	11
Troubled Debt Restructurings, Recorded Investment | $	$ 2,978	$ 389
1-4 Family Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	3	4
Troubled Debt Restructurings, Recorded Investment | $	$ 145	$ 100
1-4 Family Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	1	2
Troubled Debt Restructurings, Recorded Investment | $	$ 69	$ 84
Multi Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	0	0
Troubled Debt Restructurings, Recorded Investment | $	$ 0	$ 0
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	2	1
Troubled Debt Restructurings, Recorded Investment | $	$ 650	$ 119
Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	0	0
Troubled Debt Restructurings, Recorded Investment | $	$ 0	$ 0
Agriculture Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	0	0
Troubled Debt Restructurings, Recorded Investment | $	$ 0	$ 0
Commercial Real Estate Other Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	0	0
Troubled Debt Restructurings, Recorded Investment | $	$ 0	$ 0
Other Commercial Working Capital [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	4	0
Troubled Debt Restructurings, Recorded Investment | $	$ 2,114	$ 0
Commercial Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	0	1
Troubled Debt Restructurings, Recorded Investment | $	$ 0	$ 46
Home Equity and Home Improvement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	0	1
Troubled Debt Restructurings, Recorded Investment | $	$ 0	$ 25
Consumer Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	0	2
Troubled Debt Restructurings, Recorded Investment | $	$ 0	$ 15