Quarterly report pursuant to Section 13 or 15(d)

Geographical Information (Details)

v3.7.0.1
Geographical Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues $ 157,786 $ 131,821  
Property, Plant and Equipment, Net 33,540   $ 33,000
United States      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 141,962 120,291  
Property, Plant and Equipment, Net 28,884   28,713
International      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenues 15,824 $ 11,530  
India      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Property, Plant and Equipment, Net 4,036   3,596
Other      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Property, Plant and Equipment, Net $ 620   $ 691