Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Intangible Assets (Details)

v3.6.0.2
Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 25,707 $ 26,959
Accumulated Amortization 21,776 20,189
Intangible assets, net 3,931 6,770
Customer contracts    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 7,594 7,898
Accumulated Amortization 7,566 7,683
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 11,652 12,496
Accumulated Amortization 8,048 6,621
Non-compete agreements    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 3,203 3,324
Accumulated Amortization 3,158 3,149
Technology    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 2,716 2,701
Accumulated Amortization 2,485 2,241
Trade names    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 542 540
Accumulated Amortization $ 519 $ 495