Loans (Troubled Debt Restructured Loans) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	$ 7,916
Existing troubled debt restructurings	3,642
Total Modifications	11,558	4,500	4,100
Commercial [Member] | Asset Quality Rating - Pass [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	106
Commercial [Member] | Asset Quality Rating - Special Mention [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	83
Real Estate Construction One-To- Four Family [Member] | Asset Quality Rating - Substandard [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	810
Real Estate Construction Other [Member] | Asset Quality Rating - Pass [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	2,748
Real Estate Term Non-Owner Occupied [Member] | Asset Quality Rating - Special Mention [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	388
Real Estate Term Other [Member] | Asset Quality Rating - Special Mention [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	3,781
Real Estate Term Other [Member] | Asset Quality Rating - Substandard [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment
Accrual [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	5,221
Existing troubled debt restructurings	2,658
Total Modifications	7,879
Accrual [Member] | Commercial [Member] | Asset Quality Rating - Pass [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	106
Accrual [Member] | Commercial [Member] | Asset Quality Rating - Special Mention [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	83
Accrual [Member] | Real Estate Construction Other [Member] | Asset Quality Rating - Pass [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	2,748
Accrual [Member] | Real Estate Term Non-Owner Occupied [Member] | Asset Quality Rating - Special Mention [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	388
Accrual [Member] | Real Estate Term Other [Member] | Asset Quality Rating - Special Mention [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	1,896
Accrual [Member] | Real Estate Term Other [Member] | Asset Quality Rating - Substandard [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment
Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	2,695
Existing troubled debt restructurings	984
Total Modifications	3,679
Nonaccrual [Member] | Real Estate Construction One-To- Four Family [Member] | Asset Quality Rating - Substandard [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	810
Nonaccrual [Member] | Real Estate Term Other [Member] | Asset Quality Rating - Special Mention [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment	1,885
Nonaccrual [Member] | Real Estate Term Other [Member] | Asset Quality Rating - Substandard [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring recorded investment