Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2016

Receivables [Abstract]

Schedule of Accounts Receivable

Accounts receivable (in thousands) consisted of the following, as of:

	September 30,			December 31,
	2016			2015
Billed and billable	$	124,392		$	175,382
Less: unpaid deferred revenue		(61,932	)		(103,403	)
Accounts receivable, gross		62,460			71,979
Less: allowance for doubtful accounts		(4,408	)		(3,825	)
Accounts receivable, net	$	58,052		$	68,154