Accounts Receivable, Net (Tables)

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Summary of Accounts Receivable, Net

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

	December 31,
	2016			2015
Billed	$	181,169		$	191,089
Unbilled		104,259			96,696
		285,428			287,785
Allowance for uncollectible revenue		(1,386	)		(2,737	)
Total accounts receivable, net	$	284,042		$	285,048