Loans (Loans Sold) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012 loans	Jun. 30, 2011 loans	Jun. 30, 2012 loans	Jun. 30, 2011 loans
Financing Receivable [Line Items]
Number of loans sold	6	0	8	5
Recorded investment of loans sold	$ 1,715	$ 0	$ 5,665	$ 13,663
Contract pricing of loans sold	1,746	0	5,946	6,163
Number of nonperforming loans sold	6
Commercial and agricultural [Member]
Financing Receivable [Line Items]
Number of loans sold	0	0	0	0
Recorded investment of loans sold	0	0	0	0
Contract pricing of loans sold	0	0	0	0
Real estate - construction [Member]
Financing Receivable [Line Items]
Number of loans sold	0	0	0	4
Recorded investment of loans sold	0	0	0	13,342
Contract pricing of loans sold	0	0	0	5,813
Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable [Line Items]
Number of loans sold	6	0	7	0
Recorded investment of loans sold	1,715	0	1,865	0
Contract pricing of loans sold	1,746	0	1,896	0
Real estate - mortgage, commercial [Member]
Financing Receivable [Line Items]
Number of loans sold	0	0	1	1
Recorded investment of loans sold	0	0	3,800	321
Contract pricing of loans sold	0	0	4,050	350
Consumer [Member]
Financing Receivable [Line Items]
Number of loans sold	0	0	0	0
Recorded investment of loans sold	0	0	0	0
Contract pricing of loans sold	$ 0	$ 0	$ 0	$ 0