Loans (Impaired Loans by Loan Classification) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Recorded Investment, with a valuation allowance
Unpaid Principal Balance, with a valuation allowance
Associated Allowance, with a valuation allowance
Average Recorded Investment, with a valuation allowance
Interest Income Recognized, with a valuation allowance
Recorded Investment, total	1,839	1,736
Unpaid Principal Balance, total	1,997	1,908
Associated Allowance, total
Average Recorded Investment, total	1,707	1,990
Interest Income Recognized, total	14	61
Other real estate construction and land [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, without a valuation allowance	102	77
Unpaid Principal Balance, without a valuation allowance	137	110
Associated Allowance, without a valuation allowance
Average Recorded Investment, without a valuation allowance	84	81
Interest Income Recognized, without a valuation allowance
1-4 family residential mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, without a valuation allowance	430	285
Unpaid Principal Balance, without a valuation allowance	527	380
Associated Allowance, without a valuation allowance
Average Recorded Investment, without a valuation allowance	333	293
Interest Income Recognized, without a valuation allowance	2	11
Home equity loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, without a valuation allowance	35
Unpaid Principal Balance, without a valuation allowance	35
Associated Allowance, without a valuation allowance
Average Recorded Investment, without a valuation allowance	12
Interest Income Recognized, without a valuation allowance
Commercial owner occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, without a valuation allowance	1,134	1,144
Unpaid Principal Balance, without a valuation allowance	1,134	1,144
Associated Allowance, without a valuation allowance
Average Recorded Investment, without a valuation allowance	1,140	1,414
Interest Income Recognized, without a valuation allowance	12	50
Commercial non-owner occupied real estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, without a valuation allowance	138	230
Unpaid Principal Balance, without a valuation allowance	164	274
Associated Allowance, without a valuation allowance
Average Recorded Investment, without a valuation allowance	138	202
Interest Income Recognized, without a valuation allowance