Quarterly report pursuant to Section 13 or 15(d)

Reportable Segments - Revenue by Geographic Region (Details)

v3.19.3
Reportable Segments - Revenue by Geographic Region (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2019
Mar. 31, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenues $ 160,083 $ 157,397 $ 123,395 $ 316,114 $ 351,673
United States          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenues 70,887 66,253 57,016 143,047 153,665
Russia          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenues 45,769 49,387 30,315 88,047 90,378
EMEA & Asia          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenues 22,807 25,133 23,902 47,794 66,206
Latin America          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenues 10,480 5,482 2,596 17,275 10,214
Other CIS          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenues 3,721 3,621 2,743 7,313 9,799
Other          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Revenues $ 6,419 $ 7,521 $ 6,823 $ 12,638 $ 21,411