Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets- Intangible Assets (Details)

v2.4.0.8
Goodwill and Intangible Assets- Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount $ 28,080   $ 28,080   $ 22,056
Accumulated Amortization 15,066   15,066   11,803
Intangible assets, net 13,014   13,014   10,253
Amortization of intangible assets     3,266 3,257  
Customer contracts
          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 8,220   8,220   7,684
Accumulated Amortization 6,431   6,431   5,349
Amortization of intangible assets 513 499 1,127 953  
Customer relationships
          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 13,045   13,045   8,200
Accumulated Amortization 4,045   4,045   2,923
Non-compete agreements
          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 3,447   3,447   3,230
Accumulated Amortization 2,530   2,530   1,872
Technology
          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 2,815   2,815   2,386
Accumulated Amortization 1,640   1,640   1,299
Trade names
          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 553   553   556
Accumulated Amortization 420   420   360
Customer Relationships, Noncompete Agreements, Technology and Trade Names
          
Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets useful life     8 years 2 months 19 days    
Amortization of intangible assets $ 875 $ 969 $ 2,139 $ 2,304  
Minimum
          
Finite-Lived Intangible Assets [Line Items]          
Estimated useful life     4 years    
Minimum | Customer contracts
          
Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets useful life     1 year    
Maximum
          
Finite-Lived Intangible Assets [Line Items]          
Estimated useful life     15 years    
Maximum | Customer contracts
          
Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets useful life     5 years