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Accounts Receivable
 9 Months Ended
Sep. 30, 2015
Receivables [Abstract]  
Accounts Receivable
3. Accounts Receivable

 

(Table only in thousands)    September 30,
2015		      December 31,
2014		  

Trade receivables

    $ 12,843       $ 15,875   

Contract receivables

      88,883         43,218   

Allowance for doubtful accounts

      (968 )       (699 ) 
  

 

 

     

 

 

  
   $ 100,758       $ 58,394   
  

 

 

     

 

 

  

The provision for doubtful accounts was $0.4 million and $29,000 for the three-month periods ended September 30, 2015 and 2014, respectively, and $0.5 million and $0.1 million for the nine-month periods ended September 30, 2015 and 2014, respectively.