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ACCOUNTS RECEIVABLE NET
12 Months Ended
Dec. 31, 2016
Receivables [Abstract]  
ACCOUNTS RECEIVABLE NET
ACCOUNTS RECEIVABLE NET
 
Accounts receivable, net consists of the following:
 
December 31,
 
2016
 
2015
Trade receivables
$
44,927

 
$
42,307

Unbilled revenue
4,318

 
4,869

Other receivables
2,372

 
1,561

 
51,617

 
48,737

Less: Allowance for doubtful accounts
(348
)
 
(246
)
Accounts receivable, net
$
51,269

 
$
48,491


 
Under long-term contract accounting unbilled revenue on long-term contracts arise when the sales or revenues based on performance attainment, though appropriately recognized, cannot be billed yet under terms of the contract as of the balance sheet date.  Accounts receivable which the Company expects to collect after December 31, 2017 are not material.