Summary of Significant Accounting Policies - Segment Information - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) segment	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of segments | segment			1
Property, plant and equipment, net	$ 92,880		$ 92,880		$ 64,672
Revenues	54,433	$ 52,501	107,937	$ 95,939
Foreign Countries
Segment Reporting Information [Line Items]
Property, plant and equipment, net	16,499		16,499		$ 13,265
Revenues	$ 3,611	$ 2,680	$ 7,325	$ 5,176