Fair Value Measurements (Details 1) (Fair Value, Measurements, Nonrecurring [Member], USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Impaired loans [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets $ 8,328 $ 6,741
Other real estate owned [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets 5 10
Mortgage servicing rights [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets 174 167
Level I [Member] | Impaired loans [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets 0 0
Level I [Member] | Other real estate owned [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets 0 0
Level I [Member] | Mortgage servicing rights [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets 0 0
Level II [Member] | Impaired loans [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets 0 0
Level II [Member] | Other real estate owned [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets 0 0
Level II [Member] | Mortgage servicing rights [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets 0 0
Level III [Member] | Impaired loans [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets 8,328 6,741
Level III [Member] | Other real estate owned [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets 5 10
Level III [Member] | Mortgage servicing rights [Member]
   
Schedule of fair value of assets measured on non recurring basis    
Total Assets $ 174 $ 167