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
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangible assets $ 818 $ 891  
Gross Carrying Amount 21,121   22,056
Accumulated Amortization 12,638   11,803
Intangible assets, net 8,483   10,253
Customer contracts
      
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangible assets 251 227  
Gross Carrying Amount 7,302   7,684
Accumulated Amortization 5,616   5,349
Customer relationships
      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 7,650   8,200
Accumulated Amortization 3,224   2,923
Non-compete agreements
      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 3,252   3,230
Accumulated Amortization 2,028   1,872
Technology
      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 2,363   2,386
Accumulated Amortization 1,391   1,299
Trade names
      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 554   556
Accumulated Amortization 379   360
Customer Relationships, Noncompete Agreements, Technology and Trade Names
      
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangible assets $ 567 $ 664  
Maximum
      
Finite-Lived Intangible Assets [Line Items]      
Estimated useful life 14 years    
Maximum | Customer contracts
      
Finite-Lived Intangible Assets [Line Items]      
Acquired intangible assets useful life 5 years    
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