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Securities (Details 2) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Schedule of securities with unrealized losses    
Less than 12 Months, Fair Value $ 30,539 $ 5,431
Less than 12 Months, Unrealized Losses (753) (34)
12 Months or Longer, Fair Value 0 593
12 Months or Longer, Unrealized Losses 0 (1)
Total fair value 30,539 6,024
Total Unrealized Losses (753) (35)
U.S. Treasury and Government Agencies [Member]
    
Schedule of securities with unrealized losses    
Less than 12 Months, Fair Value 5,887  
Less than 12 Months, Unrealized Losses (160)  
12 Months or Longer, Fair Value 0  
12 Months or Longer, Unrealized Losses 0  
Total fair value 5,887  
Total Unrealized Losses (160)  
Mortgage-backed securities [Member]
    
Schedule of securities with unrealized losses    
Less than 12 Months, Fair Value 19,658 5,202
Less than 12 Months, Unrealized Losses (304) (33)
12 Months or Longer, Fair Value 0 342
12 Months or Longer, Unrealized Losses 0  
Total fair value 19,658 5,544
Total Unrealized Losses (304) (33)
State and political subdivisions [Member]
    
Schedule of securities with unrealized losses    
Less than 12 Months, Fair Value 4,994 229
Less than 12 Months, Unrealized Losses (289) (1)
12 Months or Longer, Fair Value 0 251
12 Months or Longer, Unrealized Losses 0 (1)
Total fair value 4,994 480
Total Unrealized Losses $ (289) $ (2)