Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Revenue by Major Geographic Region

	Years Ended December 31,
	2017				2016				2015
	(In thousands)
Net revenue:
United States	$	37,131	82.9	%	$	131,572	91.9	%	$	275,118	93.4	%
Europe	7,239		16.2	%	9,331		6.5	%	16,745		5.7	%
Other	419		0.9	%	2,258		1.6	%	2,684		0.9	%
Total net revenue	$	44,789			$	143,161			$	294,547

Assets by Major Geographic Region

	Years Ended December 31,
	2017				2016
	(In thousands)
Long-lived assets:
United States	$	308,843	99.7	%	$	699,004	99.4	%
Europe	836		0.3	%	4,160		0.6	%
Total long-lived assets	$	309,679			$	703,164