Annual report pursuant to Section 13 and 15(d)

Geographical Information (Details)

v3.6.0.2
Geographical Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues $ 155,480 $ 149,155 $ 141,708 $ 131,821 $ 118,435 $ 103,367 $ 102,663 $ 96,454 $ 578,164 $ 420,919 $ 348,748
Property, Plant and Equipment, Net 33,000       28,681       33,000 28,681  
United States                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 519,998 388,098 318,342
Property, Plant and Equipment, Net 28,713       24,423       28,713 24,423  
International                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 58,166 32,821 $ 30,406
India                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Property, Plant and Equipment, Net 3,596       3,687       3,596 3,687  
Other                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Property, Plant and Equipment, Net $ 691       $ 571       $ 691 $ 571