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Accounts Receivable (Tables)
9 Months Ended
Sep. 30, 2014
Receivables [Abstract]  
Summary of Accounts Receivable
(Table only in thousands)    September 30,
2014
    December 31,
2013
 

Trade receivables

   $ 19,243      $ 18,815   

Contract receivables

     29,178        26,249   

Allowance for doubtful accounts

     (782     (700
  

 

 

   

 

 

 
   $ 47,639      $ 44,364