Quarterly report pursuant to Section 13 or 15(d)

Reportable Segments - Revenue by Geographic Region (Details)

v3.19.2
Reportable Segments - Revenue by Geographic Region (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2018
Jun. 30, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues $ 156,031 $ 157,397 $ 118,603 $ 228,278
United States        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 72,160 66,253 52,655 96,651
Russia        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 42,278 49,387 28,771 60,062
EMEA & Asia        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 24,987 25,133 22,260 42,304
Latin America        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 6,795 5,482 4,104 7,617
Other CIS        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 3,592 3,621 3,506 7,056
Other        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues $ 6,219 $ 7,521 $ 7,307 $ 14,588