Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2017

Receivables [Abstract]

Schedule of Accounts Receivable

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

	June 30,			December 31,
	2017			2016
Billed and billable	$	148,529		$	188,038
Less: unpaid deferred revenue		(75,898	)		(101,538	)
Accounts receivable, gross		72,631			86,500
Less: allowance for doubtful accounts		(4,626	)		(3,181	)
Accounts receivable, net	$	68,005		$	83,319