Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Swaps (Details)

v3.8.0.1
Long-Term Debt - Swaps (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Feb. 20, 2015
Derivative [Line Items]      
Negative fair value $ 2,178 $ 1,985  
Bailment Pool Chasis Inventories Net 17,447 22,420  
Inventories - truck chassis floor plan 7,711 3,939  
Bailment pool      
Derivative [Line Items]      
Bailment Pool Chasis Inventories Net 17,447 22,420  
Dejana | Bailment pool      
Derivative [Line Items]      
Interest Expense, Debt $ 201 79  
Prime | Bailment pool      
Derivative [Line Items]      
Debt Instrument, Interest Rate, Effective Percentage 4.50%    
Senior credit facilities | Floor plan      
Derivative [Line Items]      
Maximum borrowing capacity $ 20,000    
Senior credit facilities | Dejana | Floor plan      
Derivative [Line Items]      
Interest Expense, Debt $ 186 92  
Senior credit facilities | London Interbank Offered Rate (LIBOR) | Floor plan      
Derivative [Line Items]      
Interest rate margin (as a percent) 1.75%    
Senior credit facilities | Prime | Floor plan      
Derivative [Line Items]      
Inventories - truck chassis floor plan $ 7,711 3,939  
Minimum | Prime | Bailment pool      
Derivative [Line Items]      
Interest rate margin (as a percent) 0.00%    
Maximum | Prime | Bailment pool      
Derivative [Line Items]      
Interest rate margin (as a percent) 8.00%    
Interest rate swap      
Derivative [Line Items]      
Negative fair value $ 2,178 1,985  
Interest rate swap | Accrued Expenses and Other Current Liabilities      
Derivative [Line Items]      
Negative fair value 597 335  
Interest rate swap | Other Noncurrent Liabilities      
Derivative [Line Items]      
Negative fair value $ 1,581 $ 1,650  
Interest Rate Swap Effective 31 December 2015 through 29 March 2018      
Derivative [Line Items]      
Notional amount     $ 90,000
Interest rate 6.916%    
Interest Rate Swap Effective 31 December 2015 through 29 March 2018 | London Interbank Offered Rate (LIBOR)      
Derivative [Line Items]      
Interest rate added to variable rate (as a percent) 3.00%    
LIBOR floor (as a percent) 1.00%    
Interest Rate Swap Effective 29 March 2018 through 31 March 2020      
Derivative [Line Items]      
Notional amount     45,000
Interest rate 6.105%    
Interest Rate Swap Effective 29 March 2018 through 31 March 2020 | London Interbank Offered Rate (LIBOR)      
Derivative [Line Items]      
Interest rate added to variable rate (as a percent) 3.00%    
LIBOR floor (as a percent) 1.00%    
Interest Rate Swap Effective 31 March 2020 through 30 June 2021      
Derivative [Line Items]      
Notional amount     $ 135,000
Interest rate 7.168%    
Interest Rate Swap Effective 31 March 2020 through 30 June 2021 | London Interbank Offered Rate (LIBOR)      
Derivative [Line Items]      
Interest rate added to variable rate (as a percent) 3.00%    
LIBOR floor (as a percent) 1.00%