Quarterly report pursuant to Section 13 or 15(d)

Acquisitions and Long-Lived Assets (Details)

v3.19.3
Acquisitions and Long-Lived Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended
Jul. 14, 2019
Apr. 21, 2019
Sep. 30, 2019
Jun. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Oct. 28, 2018
Segment Reporting Information [Line Items]                
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability         $ 890 $ (455)    
Business Acquisition, Goodwill, Expected Tax Deductible Amount     $ 141,279   141,279      
Operating Lease, Right-of-Use Asset     158,977   158,977   $ 0  
Carrying value of goodwill     220,423   220,423   199,092  
Finance Lease, Liability     7,555   7,555      
Operating Lease, Liability     159,690   159,690      
Reduction of depreciation due to useful life study     1,000   $ 1,000      
Reserve for loss on operating asset     $ 900          
Tractors [Member]                
Segment Reporting Information [Line Items]                
Property, Plant and Equipment, Useful Life     10 years 5 years        
Property, Plant, and Equipment, Salvage Value     10.00% 25.00% 10.00%      
Trailers [Member]                
Segment Reporting Information [Line Items]                
Property, Plant and Equipment, Useful Life     10 years 7 years        
FSA [Member]                
Segment Reporting Information [Line Items]                
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability     $ 890          
Period of years which earnout is calculated   2 years            
Business Acquisition, Cash Paid   $ 27,000            
Business Combination, Contingent Consideration, Liability   15,000            
Business Combination, Contingent Consideration, Liability, Current   10,321 11,211   $ 11,211      
Expected future contingent consideration liability     12,600   12,600      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents   202            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables   1,491            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment   40            
Operating Lease, Right-of-Use Asset   3,209            
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets   4,942            
Carrying value of goodwill   19,281            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles   37,281            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets   42,223            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities   7,664            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities   4,350            
Operating Lease, Liability   3,209            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities   15,223            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net   $ 27,000            
OST [Member]                
Segment Reporting Information [Line Items]                
Business Acquisition, Cash Paid $ 12,000              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment 10,604              
Operating Lease, Right-of-Use Asset 1,672              
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets 12,276              
Carrying value of goodwill 2,050              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles 8,600              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets 20,876              
Finance Lease, Liability 7,204              
Operating Lease, Liability 1,672              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities 8,876              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net $ 12,000              
Southwest Freight Distributors [Member]                
Segment Reporting Information [Line Items]                
Business Acquisition, Cash Paid               $ 16,250
Expedited LTL [Member]                
Segment Reporting Information [Line Items]                
Carrying value of goodwill     116,874   116,874   97,593  
Intermodal [Member]                
Segment Reporting Information [Line Items]                
Carrying value of goodwill     78,665   78,665   76,615  
Truckload Expedited [Member]                
Segment Reporting Information [Line Items]                
Carrying value of goodwill     45,164   45,164   45,164  
Goodwill, Impaired, Accumulated Impairment Loss     (25,686)   (25,686)   (25,686)  
Pool Distribution [Member]                
Segment Reporting Information [Line Items]                
Carrying value of goodwill     12,359   12,359   12,359  
Goodwill, Impaired, Accumulated Impairment Loss     $ (6,953)   $ (6,953)   $ (6,953)  
Noncompete Agreements [Member] | FSA [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   $ 900            
Noncompete Agreements [Member] | OST [Member]                
Segment Reporting Information [Line Items]                
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 3 years              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 850              
Customer Relationships [Member] | FSA [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   $ 17,100            
Customer Relationships [Member] | OST [Member]                
Segment Reporting Information [Line Items]                
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 10 years              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 5,700              
Risk Free Interest Rate [Member] | FSA [Member]                
Segment Reporting Information [Line Items]                
Business Combination, Contingent Consideration, Liability, Measurement Input Percentage   2.40%            
Revenue Discount Rate [Member] | FSA [Member]                
Segment Reporting Information [Line Items]                
Business Combination, Contingent Consideration, Liability, Measurement Input Percentage   8.50%            
Revenue Volatility [Member] | FSA [Member]                
Segment Reporting Information [Line Items]                
Business Combination, Contingent Consideration, Liability, Measurement Input Percentage   9.00%