Loans, Troubled Debt Restructuring (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012 Contract	Sep. 30, 2012 Contract
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts	2	11
Pre-Modification Outstanding Recorded Investment	$ 251	$ 2,454
Post-Modification Outstanding Recorded Investment	250	1,548
Commercial [Member]
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts	0	1
Pre-Modification Outstanding Recorded Investment	0	11
Post-Modification Outstanding Recorded Investment	0	11
Commercial real estate, portfolio [Member] | Construction and land development [Member]
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts	0	7
Pre-Modification Outstanding Recorded Investment	0	2,188
Post-Modification Outstanding Recorded Investment	0	1,283
Commercial real estate, portfolio [Member] | Home equity [Member]
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Commercial real estate, portfolio [Member] | Commercial real estate [Member]
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts	1	1
Pre-Modification Outstanding Recorded Investment	229	22
Post-Modification Outstanding Recorded Investment	229	21
Consumer [Member]
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts	1	0
Pre-Modification Outstanding Recorded Investment	22	0
Post-Modification Outstanding Recorded Investment	$ 21	$ 0