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LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Detail) (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Jan. 02, 2015
Oct. 31, 2015
Sep. 30, 2015
Sep. 30, 2015
Jan. 31, 2015
Dec. 31, 2014
Financing Arrangements            
Amounts collateralized by restricted funds     $ 1,387 $ 1,387   $ 1,386
Interest rate swap agreement            
Financing Arrangements            
Term of swap agreement 5 years          
Notional amount     $ 50,000 $ 50,000    
Fixed interest rate payments (as a percent)     1.85% 1.85%    
Interest rate swap agreement | Other long-term liabilities            
Financing Arrangements            
Fair value     $ 1,600 $ 1,600   $ 600
Credit Facility            
Financing Arrangements            
Term loan balance refinanced with revolving credit facility $ 70,000          
Maximum borrowing capacity     150,000 150,000    
Additional borrowing capacity that may be requested     75,000 75,000    
Credit Facility | Interest rate swap agreement            
Financing Arrangements            
Amount of borrowings covered by the interest rate swap     $ 50,000 $ 50,000    
Effective fixed interest rate on hedged borrowings (as a percent)     3.10% 3.10%    
Letters of Credit, Sub-Facility            
Financing Arrangements            
Maximum borrowing capacity     $ 20,000 $ 20,000    
Accounts receivable securitization program            
Financing Arrangements            
Maximum borrowing capacity     100,000 100,000 $ 75,000  
Additional borrowing capacity that may be requested     25,000 25,000    
Outstanding letters of credit     19,400 19,400    
Remaining borrowing capacity     45,600 45,600    
Letter of Credit Agreements            
Financing Arrangements            
Outstanding letters of credit     21,300 21,300    
Amounts collateralized by restricted funds     1,400 1,400    
Surety bonds            
Financing Arrangements            
Outstanding surety bonds under uncollateralized bond programs     45,000 45,000    
Revenue equipment | Freight Transportation (ABF Freight) | Notes payable            
Financing Arrangements            
Equipment financed during the period under notes payable     $ 38,300 $ 51,000    
Revenue equipment | Freight Transportation (ABF Freight) | Notes payable | Subsequent Event            
Financing Arrangements            
Equipment financed during the period under notes payable   $ 6,200