Allowance For Loan Losses (Trouble Debt Restructuring) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012 loans	Jun. 30, 2012 loans
Financing Receivable, Modifications [Line Items]
Pre-modification outstanding recorded investment	$ 986	$ 3,940
Post-modification outstanding recorded investment	943	3,014
Number of loans	7	19
Term extension [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	5
Interest rate modification [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	1
Commercial and agricultural [Member]
Financing Receivable, Modifications [Line Items]
Pre-modification outstanding recorded investment	0	0
Post-modification outstanding recorded investment	0	0
Number of loans	0	0
Real estate - construction [Member]
Financing Receivable, Modifications [Line Items]
Pre-modification outstanding recorded investment	369	2,526
Post-modification outstanding recorded investment	329	1,603
Number of loans	4	9
Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable, Modifications [Line Items]
Pre-modification outstanding recorded investment	0	58
Post-modification outstanding recorded investment	0	58
Number of loans	0	2
Real estate - mortgage, commercial [Member]
Financing Receivable, Modifications [Line Items]
Pre-modification outstanding recorded investment	617	1,356
Post-modification outstanding recorded investment	614	1,353
Number of loans	3	8
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Pre-modification outstanding recorded investment	0	0
Post-modification outstanding recorded investment	$ 0	$ 0
Number of loans	0	0