Loans Loans Modified in Trouble Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Financing Receivable, Modifications [Line Items]
Number of Loans	2	4	7	10
Pre-Modification Outstanding Recorded Investment	$ 16	$ 93	$ 60	$ 150
Post-Modification Outstanding Recorded Investment	16	93	60	150
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	1	0	1
Pre-Modification Outstanding Recorded Investment	0	62	0	62
Post-Modification Outstanding Recorded Investment	0	62	0	62
Commercial Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	0	0	0
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Post-Modification Outstanding Recorded Investment	0	0	0	0
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	0	0	0
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Post-Modification Outstanding Recorded Investment	0	0	0	0
Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	0	0	0
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Post-Modification Outstanding Recorded Investment	0	0	0	0
Automobile [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	2	3	7	9
Pre-Modification Outstanding Recorded Investment	16	31	60	88
Post-Modification Outstanding Recorded Investment	16	31	60	88
Residential [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	0	0	0
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0