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Acquisition (Details) (PAC, USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2013
Dec. 31, 2012
PAC
     
Acquisition      
Purchase price     $ 5,700,000
Sales 2,672,331 5,354,035  
Operating income $ 145,293 $ 211,839