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Contingencies (Details) (Breach of contract and violation of the Pennsylvania Wage Payment and Collection Law, Pending lawsuit, USD $)
0 Months Ended 1 Months Ended
Sep. 26, 2011
Dec. 31, 2013
Breach of contract and violation of the Pennsylvania Wage Payment and Collection Law | Pending lawsuit
   
Legal Proceedings    
Amount of damages claimed $ 583,000  
Settlement amount   $ 540,000