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Basic and Diluted Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2013
Earnings Per Share Abstract  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
           Quarter ended March 31,
(Dollars in thousands, except share and per share data)        2013  2012
Basic and diluted:            
 Net earnings       $1,689 $1,465
 Weighted average common shares outstanding        3,642,918  3,642,738
  Earnings per share       $0.46 $0.40