Accounts Receivable, Net (Tables)

3 Months Ended

Mar. 31, 2013

Accounts Receivable, Net [Abstract]

Schedule of accounts receivable, net

Accounts receivable, net consists of the following:

	March 31,			December 31,
	2013			2012
Trade receivables	$	57,385		$	50,876
Unbilled revenue		20,969			12,372
Other receivables		5,001			6,198
		83,355			69,446
Less: Allowance for doubtful accounts		(274	)		(287	)
Accounts receivable, net	$	83,081		$	69,159