Loans and Allowance (Newly Restructured Loans by Type) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term	406	$ 2,406	$ 701
Combination			547
Total modification	406	2,406	1,248
Commercial Real Estate [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total modification	83	155
Commercial Segment [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term	83
Combination		155
Total modification	83	155
Commercial Segment [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term		83	223
Total modification		83	223
Consumer [Member] | First Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only			101
Term	47	11
Combination	864	276	1,038
Total modification	911	287	1,139
Consumer [Member] | Second Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term		51	28
Combination	39		31
Total modification	39	51	$ 59
Consumer [Member] | Automobile Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term		25
Combination	4
Total modification	4	$ 25
Consumer [Member] | Boat/RVs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term	48
Combination	8
Total modification	56
Consumer [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term	7
Total modification	$ 7