Revenue Recognition (Adoption of ASC 606) - Schedule of Revenue from Contract with Customers (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 88,506
Product Revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	71,045
Service Revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	17,461
Operating Segments | Western Hemisphere
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	51,518
Operating Segments | Eastern Hemisphere
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	25,838
Operating Segments | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	11,150
Operating Segments | Product Revenues | Western Hemisphere
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	42,436
Operating Segments | Product Revenues | Eastern Hemisphere
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	19,865
Operating Segments | Product Revenues | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,744
Operating Segments | Service Revenues | Western Hemisphere
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	9,082
Operating Segments | Service Revenues | Eastern Hemisphere
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	5,973
Operating Segments | Service Revenues | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,406
Intercompany
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Intercompany | Product Revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0
Intercompany | Service Revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 0