Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details)

v3.7.0.1
Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Components of intangible assets      
Gross Carrying Amount $ 353,255   $ 353,267
Accumulated Amortization (98,282)   (87,709)
Net Carrying Amount 254,973   265,558
Amortization expense 10,585 $ 11,926  
Customer lists      
Components of intangible assets      
Gross Carrying Amount 259,490   259,490
Accumulated Amortization (60,879)   (54,861)
Net Carrying Amount $ 198,611   204,629
Customer lists | Minimum      
Components of intangible assets      
Estimated Useful Life 4 years    
Customer lists | Maximum      
Components of intangible assets      
Estimated Useful Life 15 years    
Backlog      
Components of intangible assets      
Estimated Useful Life 4 years    
Gross Carrying Amount $ 11,000   11,000
Accumulated Amortization (7,489)   (6,456)
Net Carrying Amount 3,511   4,544
Proprietary technology      
Components of intangible assets      
Gross Carrying Amount 57,770   57,770
Accumulated Amortization (22,886)   (20,214)
Net Carrying Amount $ 34,884   37,556
Proprietary technology | Minimum      
Components of intangible assets      
Estimated Useful Life 2 years    
Proprietary technology | Maximum      
Components of intangible assets      
Estimated Useful Life 8 years    
Trade names and domains      
Components of intangible assets      
Gross Carrying Amount $ 24,995   25,007
Accumulated Amortization (7,028)   (6,178)
Net Carrying Amount $ 17,967   $ 18,829
Trade names and domains | Minimum      
Components of intangible assets      
Estimated Useful Life 2 years    
Trade names and domains | Maximum      
Components of intangible assets      
Estimated Useful Life 7 years