Annual report pursuant to Section 13 and 15(d)

Acquisitions, Goodwill and Other Long-Lived Assets (Details)

v3.10.0.1
Acquisitions, Goodwill and Other Long-Lived Assets (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Oct. 28, 2018
Jul. 25, 2018
Oct. 22, 2017
May 07, 2017
Aug. 29, 2016
Jan. 31, 2016
Segment Reporting Information [Line Items]                                  
Impairment of Intangible Assets, Finite-lived                 $ 16,501 $ 16,501              
Goodwill, Net $ 199,092       $ 191,671       199,092 191,671              
Payments to Acquire Businesses, Net of Cash Acquired                 19,987 23,140 $ 11,800            
Unrecognized Tax Benefits, Income Tax Penalties Accrued 61       105       61 105              
Unrecognized Tax Benefits, Interest on Income Taxes Accrued 143       201       143 201              
Operating Income (Loss) 35,047 $ 29,879 $ 32,870 $ 24,235 27,843 $ 27,176 $ 29,996 $ 23,743 122,031 108,757 59,703            
Net income (loss) $ 27,684 $ 22,329 $ 24,298 $ 17,741 $ 34,681 $ 18,328 $ 19,666 $ 14,581 $ 92,051 $ 87,255 $ 27,505            
Basic (in dollars per share) $ 0.95 $ 0.76 $ 0.83 $ 0.60 $ 1.17 $ 0.61 $ 0.65 $ 0.48 $ 3.14 $ 2.90 $ 0.90            
Diluted (in dollars per share) $ 0.95 $ 0.76 $ 0.82 $ 0.60 $ 1.16 $ 0.61 $ 0.65 $ 0.48 $ 3.12 $ 2.89 $ 0.90            
Customer Relationships [Member]                                  
Segment Reporting Information [Line Items]                                  
Impairment of Intangible Assets, Finite-lived                 $ 16,501 $ 16,501              
Atlantic [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Acquisition, Cash Paid                             $ 22,500    
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High $ 135               $ 135                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets                             1,821    
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets                             1,821    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                             21,269    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net 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    
Atlantic [Member] | Noncompete Agreements [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    
Atlantic [Member] | Customer Relationships [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    
Atlantic [Member] | Goodwill [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                             $ 6,719    
KCL [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Acquisition, Cash Paid                           $ 640      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets                           223      
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets                           223      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                           517      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net 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      
KCL [Member] | Noncompete Agreements [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      
KCL [Member] | Customer Relationships [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      
KCL [Member] | Goodwill [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                           277      
MMT [Member]                                  
Segment Reporting Information [Line Items]                                  
Goodwill, Net 1,954               $ 1,954                
Business Acquisition, Cash Paid                         $ 3,737        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets                         81        
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets                         81        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                         3,656        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Assets                         3,737        
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Net Total Assets                         3,737        
MMT [Member] | Noncompete Agreements [Member]                                  
Segment Reporting Information [Line Items]                                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life                 4 years                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill                         43        
MMT [Member] | Customer Relationships [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        
MMT [Member] | Goodwill [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                         $ 1,954        
Triumph & Ace [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets                               $ 1,294  
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets                               1,294  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                               11,756  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Assets                               13,050  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other                               1,250  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities                               1,250  
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Net Total Assets                               11,800  
Triumph & Ace [Member] | Noncompete Agreements [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                               139  
Triumph & Ace [Member] | Customer Relationships [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                               5,335  
Triumph & Ace [Member] | Goodwill [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                               6,282  
Ace [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Acquisition, Cash Paid                                 $ 1,700
Triumph [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Acquisition, Cash Paid                               10,100  
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High                               $ 1,250  
Southwest Freight Distributors [Member]                                  
Segment Reporting Information [Line Items]                                  
Goodwill, Net $ 5,467               $ 5,467                
Business Acquisition, Cash Paid                       $ 16,250          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets                       933          
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Total Tangible Assets                       933          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                       15,317          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Assets                       16,250          
Business Combination, Recognized Identifiable Assets Acquired and Total Liabilities Assumed, Net Total Assets                       16,250          
Southwest Freight Distributors [Member] | Noncompete Agreements [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                       650          
Southwest Freight Distributors [Member] | Customer Relationships [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                       9,200          
Southwest Freight Distributors [Member] | Goodwill [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                       $ 5,467          
KCL [Member]                                  
Segment Reporting Information [Line Items]                                  
Business Combination, Contingent Consideration, Liability                           $ 100