Allowance for Loan Losses (Troubled Debt Restructurings) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Modifications [Line Items]
Accrual Status	$ 7,511	$ 5,008
Total Modifications	7,511	5,008
Commercial real estate [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	1,261	2,383
Total Modifications	1,261	2,383
Construction and Land Development [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	2,069	2,625
Total Modifications	2,069	2,625
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	2,248
Total Modifications	2,248
Owner occupied real estate [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	1,933
Total Modifications	$ 1,933