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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2014
Accounting Policies [Line Items]        
Prepaid Expense, Current $ 8,400 $ 10,200    
General And Administrative Expenses Cost Of Goods Sold Depreciation 16,200 16,500 $ 15,700  
Capital Leases, Balance Sheet, Assets by Major Class, Net, Total 5,000 10,200    
Amortization Of Intangible Assets 21,259 21,878 21,786  
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation 2,600 3,500    
Estimated amortization expense for 2016 20,000      
Estimated amortization expense for 2017 16,900      
Estimated amortization expense for 2018 15,400      
Estimated amortization expense for 2019 14,500      
Estimated amortization expense for 2020 13,700      
Research and Development Expense 4,800 1,700 2,500  
Capitalized Computer Software, Net 2,700 2,200    
Capitalized Computer Software, Amortization 600 500 $ 700  
Goodwill, Period Increase (Decrease)   $ 500    
Impairment of intangible assets, finite-lived 1,087  
Retail        
Accounting Policies [Line Items]        
Disposal Group, Including Discontinued Operation, Goodwill       $ 500
Goodwill, Period Increase (Decrease) 9,900      
Used Trailers        
Accounting Policies [Line Items]        
Property, Plant and Equipment, Additions 12,800 $ 26,800 $ 26,200  
Accounts Payable, Trade 2,100 10,000    
Property Plant And Equipment Net Realizable Value $ 2,200 $ 10,000    
Building and Building Improvements        
Accounting Policies [Line Items]        
Property, Plant and Equipment, Useful Life 33 years