Loans (Details 3) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Schedule of impairment by class of loans    
Unpaid Principal Balance $ 9,514 $ 7,408
Recorded Investment with no Allowance 1,523 0
Recorded Investment with Allowance 7,692 7,263
Total Recorded Investment 9,215 7,263
Related Allowance 887 522
Average Recorded Investment 9,145 5,917
Commercial [Member]
   
Schedule of impairment by class of loans    
Unpaid Principal Balance 3,895 4,605
Recorded Investment with no Allowance 0 0
Recorded Investment with Allowance 3,889 4,605
Total Recorded Investment 3,889 4,605
Related Allowance 86 165
Average Recorded Investment 4,240 2,890
Commercial real estate [Member]
   
Schedule of impairment by class of loans    
Unpaid Principal Balance 4,833 2,621
Recorded Investment with no Allowance 1,266 0
Recorded Investment with Allowance 3,414 2,476
Total Recorded Investment 4,680 2,476
Related Allowance 658 304
Average Recorded Investment 4,213 2,924
Residential real estate [Member]
   
Schedule of impairment by class of loans    
Unpaid Principal Balance 613 182
Recorded Investment with no Allowance 91 0
Recorded Investment with Allowance 389 182
Total Recorded Investment 480 182
Related Allowance 143 53
Average Recorded Investment 526 103
Construction & land development [Member]
   
Schedule of impairment by class of loans    
Unpaid Principal Balance 173  
Recorded Investment with no Allowance 166  
Recorded Investment with Allowance 0  
Total Recorded Investment 166  
Related Allowance 0  
Average Recorded Investment $ 166