Annual report pursuant to Section 13 and 15(d)

Reportable Segments - Results of Operations by Geographic Area (Detail)

v3.8.0.1
Reportable Segments - Results of Operations by Geographic Area (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Revenues:                      
Total revenues $ 116,334 $ 118,308 $ 109,607 $ 98,271 $ 94,025 $ 97,189 $ 105,287 $ 130,503 $ 442,520 $ 427,004 $ 712,183
Long-lived assets:                      
Total long-lived assets 625,771       693,439       625,771 693,439  
Russia                      
Revenues:                      
Total revenues                 139,144 142,538 165,193
Long-lived assets:                      
Total long-lived assets 19,415       21,395       19,415 21,395  
Other CIS                      
Revenues:                      
Total revenues                 23,768 33,659 61,145
Long-lived assets:                      
Total long-lived assets 29,402       35,914       29,402 35,914  
EMEA & Asia                      
Revenues:                      
Total revenues                 64,572 79,870 148,015
Long-lived assets:                      
Total long-lived assets 108,621       116,857       108,621 116,857  
Latin America                      
Revenues:                      
Total revenues                 11,594 12,952 69,989
Long-lived assets:                      
Total long-lived assets 38,959       48,528       38,959 48,528  
United States                      
Revenues:                      
Total revenues                 177,630 127,596 231,779
Long-lived assets:                      
Total long-lived assets 429,374       470,745       429,374 470,745  
Other                      
Revenues:                      
Total revenues                 25,812 30,389 $ 36,062
Long-lived assets:                      
Total long-lived assets $ 0       $ 0       $ 0 $ 0