Supplemental Information - Schedule of Revenues by Geographic Region (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	$ 38,376	$ 17,919	$ 73,256	$ 30,972	$ 82,888
Germany
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenues	$ 6,817	$ 1,766	$ 12,216	$ 2,659	$ 9,799