Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details)

v2.4.0.8
Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Components of intangible assets      
Gross Carrying Amount $ 53,773   $ 53,773
Accumulated Amortization (20,519)   (18,075)
Net Carrying Amount 33,254   35,698
Amortization expense for intangible assets      
Amortization expense 2,444 1,584  
Customer lists
      
Components of intangible assets      
Gross Carrying Amount 42,103   42,103
Accumulated Amortization (16,117)   (14,593)
Net Carrying Amount 25,986   27,510
Customer lists | Minimum
      
Components of intangible assets      
Useful Life 4 years    
Customer lists | Maximum
      
Components of intangible assets      
Useful Life 12 years    
Proprietary technologies
      
Components of intangible assets      
Gross Carrying Amount 9,580   9,580
Accumulated Amortization (3,595)   (2,792)
Net Carrying Amount 5,985   6,788
Proprietary technologies | Minimum
      
Components of intangible assets      
Useful Life 1 year 6 months    
Proprietary technologies | Maximum
      
Components of intangible assets      
Useful Life 8 years    
Trade names
      
Components of intangible assets      
Useful Life 5 years    
Gross Carrying Amount 2,090   2,090
Accumulated Amortization (807)   (690)
Net Carrying Amount $ 1,283   $ 1,400