Loans and the Allowance for Loan Losses, Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 21,974	$ 21,540
Without Valuation Allowance	4,922	8,372
With Valuation Allowance	13,089	9,196
Associated Allowance	1,920	444
Average Recorded Investment	19,111	16,888
Interest Income Recognized	394	366
Residential 1-4 Family [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	5,943	4,100
Without Valuation Allowance	1,443	681
With Valuation Allowance	4,236	3,235
Associated Allowance	1,065	226
Average Recorded Investment	5,053	2,354
Interest Income Recognized	71	136
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	12,563	12,459
Without Valuation Allowance	3,472	3,741
With Valuation Allowance	6,156	5,817
Associated Allowance	571	180
Average Recorded Investment	10,414	10,151
Interest Income Recognized	317	242
Construction [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	3,305	3,782
Without Valuation Allowance	0	3,064
With Valuation Allowance	2,546	0
Associated Allowance	149	0
Average Recorded Investment	2,880	3,320
Interest Income Recognized	0	(9)
Second Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	147	695
Without Valuation Allowance	7	583
With Valuation Allowance	135	47
Associated Allowance	135	5
Average Recorded Investment	546	542
Interest Income Recognized	5	12
Equity Line of Credit [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0	370
Without Valuation Allowance	0	286
With Valuation Allowance	0	0
Associated Allowance	0	0
Average Recorded Investment	193	391
Interest Income Recognized	0	(2)
Total Mortgage Loans on Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	21,958	21,406
Without Valuation Allowance	4,922	8,355
With Valuation Allowance	13,073	9,099
Associated Allowance	1,920	411
Average Recorded Investment	19,086	16,758
Interest Income Recognized	393	379
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0	117
Without Valuation Allowance	0	0
With Valuation Allowance	0	97
Associated Allowance	0	33
Average Recorded Investment	8	104
Interest Income Recognized	0	(14)
Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	16	17
Without Valuation Allowance	0	17
With Valuation Allowance	16	0
Associated Allowance	0	0
Average Recorded Investment	17	26
Interest Income Recognized	$ 1	$ 1