Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets- Intangible Assets (Details)

v3.5.0.2
Goodwill and Intangible Assets- Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount $ 26,322   $ 26,322   $ 26,959
Accumulated Amortization 21,040   21,040   20,189
Intangible assets, net 5,282   5,282   6,770
Amortization of intangible assets     1,211 $ 2,024  
Customer contracts          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 7,753   7,753   7,898
Accumulated Amortization 7,634   7,634   7,683
Amortization of intangible assets 48 $ 231 94 459  
Customer relationships          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 12,025   12,025   12,496
Accumulated Amortization 7,357   7,357   6,621
Non-compete agreements          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 3,265   3,265   3,324
Accumulated Amortization 3,160   3,160   3,149
Technology          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 2,735   2,735   2,701
Accumulated Amortization 2,381   2,381   2,241
Trade names          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 544   544   540
Accumulated Amortization 508   508   $ 495
Customer Relationships, Noncompete Agreements, Technology and Trade Names          
Finite-Lived Intangible Assets [Line Items]          
Amortization of intangible assets $ 559 $ 784 $ 1,117 $ 1,565  
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