Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets, net - Finite-Lived Intangible Assets (Details)

v3.8.0.1
Intangible Assets, net - Finite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Gross carrying value $ 254,409 $ 254,409
Accumulated amortization 142,390 131,827
Net carrying value $ 112,019 $ 122,582
Existing technology -- software    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful lives 4 years 9 months 4 years 9 months
Gross carrying value $ 42,999 $ 42,999
Accumulated amortization 22,800 20,209
Net carrying value $ 20,199 $ 22,790
Existing technology -- games    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful lives 5 years 5 years
Gross carrying value $ 12,331 $ 12,331
Accumulated amortization 12,331 12,125
Net carrying value $ 0 $ 206
Developed technology    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful lives 8 years 8 years
Gross carrying value $ 7,317 $ 7,317
Accumulated amortization 4,116 3,887
Net carrying value $ 3,201 $ 3,430
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful lives 7 years 11 months 7 years 11 months
Gross carrying value $ 170,716 $ 170,716
Accumulated amortization 91,056 85,160
Net carrying value $ 79,660 $ 85,556
Backlog    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful lives 3 years 3 years
Gross carrying value $ 18,300 $ 18,300
Accumulated amortization 10,167 8,642
Net carrying value $ 8,133 $ 9,658
Other    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful lives 4 years 6 months 4 years 6 months
Gross carrying value $ 2,746 $ 2,746
Accumulated amortization 1,920 1,804
Net carrying value $ 826 $ 942
Minimum    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful lives 2 years  
Maximum    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful lives 10 years  
Weighted average    
Finite-Lived Intangible Assets [Line Items]    
Weighted average useful lives 6 years 10 months 24 days