ACCOUNTS RECEIVABLE NET

12 Months Ended

Dec. 31, 2013

Receivables [Abstract]

ACCOUNTS RECEIVABLE NET

ACCOUNTS RECEIVABLE NET

Accounts receivable, net consists of the following:

	December 31,
	2013			2012
Trade receivables	$	63,804		$	50,876
Unbilled revenue	7,256			12,372
Other receivables	1,973			6,198
	73,033			69,446
Less: Allowance for doubtful accounts	(180		)	(287		)
Accounts receivable, net	$	72,853		$	69,159

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 expected to be collected after one year are not material.