Segment and Geographic Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) segment	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of operating segments | segment			1
Net revenue	$ 16,871	$ 37,599	$ 59,829	$ 142,636
Percentage of revenue by geographic segments	100.00%	100.00%	100.00%	100.00%
Long-lived assets	$ 709,142		$ 709,142		$ 1,051,258
Percentage of long-lived assets by geographic segments	100.00%		100.00%		100.00%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 15,460	$ 35,662	$ 55,062	$ 133,273
Percentage of revenue by geographic segments	91.60%	94.80%	92.00%	93.30%
Long-lived assets	$ 708,309		$ 708,309		$ 1,047,098
Percentage of long-lived assets by geographic segments	99.90%		99.90%		99.60%
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 1,208	$ 1,726	$ 4,355	$ 7,544
Percentage of revenue by geographic segments	7.20%	4.60%	7.30%	5.30%
Long-lived assets	$ 833		$ 833		$ 4,160
Percentage of long-lived assets by geographic segments	0.10%		0.10%		0.40%
Rest of world
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 203	$ 211	$ 412	$ 1,819
Percentage of revenue by geographic segments	1.20%	0.60%	0.70%	1.40%