Quarterly report pursuant to Section 13 or 15(d)

Acquisitions and Goodwill (Details)

v3.10.0.1
Acquisitions and Goodwill (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2018
Jul. 25, 2018
Dec. 31, 2017
Oct. 22, 2017
May 07, 2017
Segment Reporting Information [Line Items]            
Towne revenue $ 20,000          
Business Acquisition, Goodwill, Expected Tax Deductible Amount 114,481 $ 114,481        
Carrying value of goodwill 193,625 193,625 $ 1,954 $ 191,671    
Atlantic [Member]            
Segment Reporting Information [Line Items]            
Business Acquisition, Cash Paid           $ 22,500
Business Combination, Contingent Consideration, Liability           135
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment           1,821
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets           1,821
Carrying value of goodwill           6,719
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles           21,269
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets           23,090
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities           590
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities           590
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Net Total Assets           22,500
Expedited LTL [Member]            
Segment Reporting Information [Line Items]            
Carrying value of goodwill 97,593 97,593   97,593    
Truckload Expedited [Member]            
Segment Reporting Information [Line Items]            
Goodwill, Impaired, Accumulated Impairment Loss (25,686) (25,686)   (25,686)    
Carrying value of goodwill 45,164 45,164   45,164    
Pool Distribution [Member]            
Segment Reporting Information [Line Items]            
Goodwill, Impaired, Accumulated Impairment Loss (6,953) (6,953)   (6,953)    
Carrying value of goodwill 12,359 12,359   12,359    
Intermodal [Member]            
Segment Reporting Information [Line Items]            
Carrying value of goodwill $ 71,148 $ 71,148 1,954 $ 69,194    
KCL [Member]            
Segment Reporting Information [Line Items]            
Business Acquisition, Cash Paid         $ 640  
Business Combination, Contingent Consideration, Liability         100  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment         223  
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets         223  
Carrying value of goodwill         277  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles         517  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets         740  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities         100  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities         100  
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Net Total Assets         640  
MMT [Member]            
Segment Reporting Information [Line Items]            
Business Acquisition, Cash Paid     3,737      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment     81      
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets     81      
Carrying value of goodwill     1,954      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles     3,656      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets     3,737      
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Net Total Assets     3,737      
Noncompete Agreements [Member] | Atlantic [Member]            
Segment Reporting Information [Line Items]            
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   5 years        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           1,150
Noncompete Agreements [Member] | KCL [Member]            
Segment Reporting Information [Line Items]            
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   2 years        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill         6  
Noncompete Agreements [Member] | MMT [Member]            
Segment Reporting Information [Line Items]            
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   5 years        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill     43      
Customer Relationships [Member] | Atlantic [Member]            
Segment Reporting Information [Line Items]            
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   15 years        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill           $ 13,400
Customer Relationships [Member] | KCL [Member]            
Segment Reporting Information [Line Items]            
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   15 years        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill         $ 234  
Customer Relationships [Member] | MMT [Member]            
Segment Reporting Information [Line Items]            
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   15 years        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill     $ 1,659