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Accounts Receivable
12 Months Ended
Dec. 31, 2013
Receivables [Abstract]  
Accounts Receivable

3. Accounts Receivable

 

     2013     2012  

Trade receivables

   $ 18,815      $ 3,893   

Contract receivables

     26,249        26,171   

Allowance for doubtful accounts

     (700     (565
  

 

 

   

 

 

 
   $ 44,364      $ 29,499   
  

 

 

   

 

 

 

Balances billed, but not paid by customers under retainage provisions in contracts, amounted to approximately $1.1 million and $0.4 million at December 31, 2013 and 2012, respectively. Retainage receivables on contracts in progress are generally collected within a year after contract completion.

Provision for doubtful accounts was approximately $0.1 million and $0.2 million during 2013 and 2012, respectively, while accounts charged to (recovered from) the allowance were $(35,000) and $0.2 million during 2013 and 2012, respectively.