Loans (Details 3) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Schedule of impairment by class of loans    
Unpaid Principal Balance $ 10,267 $ 7,408
Recorded Investment with no Allowance 1,351 0
Recorded Investment with Allowance 8,801 7,263
Total Recorded Investment 10,152 7,263
Related Allowance 893 522
Average Recorded Investment 9,215 5,917
Commercial [Member]
   
Schedule of impairment by class of loans    
Unpaid Principal Balance 3,915 4,605
Recorded Investment with no Allowance 0 0
Recorded Investment with Allowance 3,928 4,605
Total Recorded Investment 3,928 4,605
Related Allowance 86 165
Average Recorded Investment 4,243 2,890
Commercial real estate [Member]
   
Schedule of impairment by class of loans    
Unpaid Principal Balance 4,950 2,621
Recorded Investment with no Allowance 1,263 0
Recorded Investment with Allowance 3,641 2,476
Total Recorded Investment 4,904 2,476
Related Allowance 689 304
Average Recorded Investment 4,160 2,924
Residential real estate [Member]
   
Schedule of impairment by class of loans    
Unpaid Principal Balance 1,229 182
Recorded Investment with no Allowance 88 0
Recorded Investment with Allowance 1,066 182
Total Recorded Investment 1,154 182
Related Allowance 57 53
Average Recorded Investment 646 103
Construction & Land Development [Member]
   
Schedule of impairment by class of loans    
Unpaid Principal Balance 173  
Recorded Investment with no Allowance 0  
Recorded Investment with Allowance 166  
Total Recorded Investment 166  
Related Allowance 61  
Average Recorded Investment $ 166