Loans and Allowance for Loan Losses (Details 5) (Interest Only at Market Rate of Interest [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012 Loan	Jun. 30, 2012 Loan
Schedule of TDR by class and modification type
No. of Loans	15	27
Recorded investment at period end	$ 4,070	$ 7,454
Commercial Real Estate - Non-Owner Occupied [Member]
Schedule of TDR by class and modification type
No. of Loans	2
Recorded investment at period end	2,390
Commercial [Member]
Schedule of TDR by class and modification type
No. of Loans		2
Recorded investment at period end		2,390
Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member]
Schedule of TDR by class and modification type
No. of Loans		2
Recorded investment at period end		2,390
Modified to Interest Only [Member]
Schedule of TDR by class and modification type
No. of Loans	1	6
Recorded investment at period end	283	789
Modified to Interest Only [Member] | Commercial [Member] | Raw Land and Lots [Member]
Schedule of TDR by class and modification type
No. of Loans		3
Recorded investment at period end		327
Modified to Interest Only [Member] | Commercial [Member] | Single Family Investment Real Estate [Member]
Schedule of TDR by class and modification type
No. of Loans		2
Recorded investment at period end		179
Modified to Interest Only [Member] | Consumer [Member] | Mortgage [Member]
Schedule of TDR by class and modification type
No. of Loans	1	1
Recorded investment at period end	283	283
Term modification, at a market rate [Member]
Schedule of TDR by class and modification type
No. of Loans	9	15
Recorded investment at period end	748
Term modification, at a market rate [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member]
Schedule of TDR by class and modification type
No. of Loans	1	3
Recorded investment at period end	132	1,822
Term modification, at a market rate [Member] | Commercial [Member] | Raw Land and Lots [Member]
Schedule of TDR by class and modification type
No. of Loans		1
Recorded investment at period end		604
Term modification, at a market rate [Member] | Commercial [Member] | Commercial and Industrial [Member]
Schedule of TDR by class and modification type
No. of Loans	5	6
Recorded investment at period end	329	430
Term modification, at a market rate [Member] | Consumer [Member]
Schedule of TDR by class and modification type
Recorded investment at period end		3,617
Term modification, at a market rate [Member] | Consumer [Member] | Mortgage [Member]
Schedule of TDR by class and modification type
No. of Loans	1	2
Recorded investment at period end	202	474
Term modification, at a market rate [Member] | Consumer [Member] | Other Consumer [Member]
Schedule of TDR by class and modification type
No. of Loans	2	3
Recorded investment at period end	85	287
Term modification, below market rate [Member] | Commercial Real Estate - Owner Occupied [Member]
Schedule of TDR by class and modification type
No. of Loans	3
Recorded investment at period end	649
Term modification, below market rate [Member] | Commercial Real Estate - Non-Owner Occupied [Member]
Schedule of TDR by class and modification type
No. of Loans	2
Recorded investment at period end	2,390
Term modification, below market rate [Member] | Commercial [Member]
Schedule of TDR by class and modification type
No. of Loans		4
Recorded investment at period end		658
Term modification, below market rate [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member]
Schedule of TDR by class and modification type
No. of Loans	3	4
Recorded investment at period end	$ 649	$ 658