Segment and Geographic Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of operating segments | segment									1
Total net revenues	$ 25,199	$ 37,599	$ 54,731	$ 50,306	$ 67,167	$ 57,206	$ 74,519	$ 110,115	$ 167,835	$ 309,007	$ 659,690
Long-lived assets	1,051,258				962,599				1,051,258	962,599
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenues									$ 156,245	$ 289,578	$ 623,112
Percentage of revenue by geographic segments									93.10%	93.70%	94.50%
Long-lived assets	$ 1,047,098				$ 956,298				$ 1,047,098	$ 956,298
Percentage of long-lived assets by geographic segments	99.60%				99.30%				99.60%	99.30%
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenues									$ 9,331	$ 16,745	$ 32,860
Percentage of revenue by geographic segments									5.60%	5.40%	5.00%
Long-lived assets	$ 4,160				$ 6,301				$ 4,160	$ 6,301
Percentage of long-lived assets by geographic segments	0.40%				0.70%				0.40%	0.70%
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenues									$ 2,259	$ 2,684	$ 3,718
Percentage of revenue by geographic segments									1.30%	0.90%	0.60%