Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets Subject to Amortization (Detail)

v3.5.0.2
Intangible Assets Subject to Amortization (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]    
Gross Cost $ 59,200 $ 52,400
Accumulated Amortization (14,700) (12,900)
Net Carrying Amount 44,472 39,595
Customer Contracts and back log    
Finite-Lived Intangible Assets [Line Items]    
Gross Cost 3,300 4,800
Accumulated Amortization (3,100) (4,500)
Net Carrying Amount 200 300
Customer relationships and product supply agreements    
Finite-Lived Intangible Assets [Line Items]    
Gross Cost 34,300 28,900
Accumulated Amortization (7,100) (4,500)
Net Carrying Amount 27,200 24,400
Non- compete agreement    
Finite-Lived Intangible Assets [Line Items]    
Gross Cost 1,400 1,100
Accumulated Amortization (600) (400)
Net Carrying Amount 800 700
Technology    
Finite-Lived Intangible Assets [Line Items]    
Gross Cost 2,000 2,000
Accumulated Amortization (500) (300)
Net Carrying Amount 1,500 1,700
Trademarks / Trade Names    
Finite-Lived Intangible Assets [Line Items]    
Gross Cost 17,600 15,000
Accumulated Amortization (3,000) (2,900)
Net Carrying Amount 14,600 12,100
Other    
Finite-Lived Intangible Assets [Line Items]    
Gross Cost 600 600
Accumulated Amortization (400) (300)
Net Carrying Amount $ 200 $ 300