XML 80 R56.htm IDEA: XBRL DOCUMENT v3.8.0.1
Business Acquisitions - (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Feb. 28, 2017
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]                        
Note payable, carrying value   $ 79,611       $ 100,686       $ 79,611 $ 100,686  
Assets:                        
Goodwill   301,790       208,355       301,790 208,355 $ 208,079
Liabilities:                        
Operating revenues                   890,151 718,774 694,700
Net income   12,228 $ 13,639 $ 19,266 $ 40,754 $ (1,345) $ 2,037 $ 8,026 $ 32,882 85,887 $ 41,600 $ 38,415
UniRush, LLC [Member]                        
Business Combination, Consideration Transferred [Abstract]                        
Cash, including proceeds from notes payable $ 142,154                      
Fair value of contingent consideration 21,500                      
Total consideration 163,654                      
Contingent consideration, earn-out payable $ 20,000 $ 4,000               $ 4,000    
Contingent consideration, earn-out period (in years) 5 years                      
Assets:                        
Cash and cash equivalents $ 656                      
Accounts receivable, net 5,745                      
Prepaid expenses and other assets 5,146                      
Property and equipment, net 4,233                      
Intangible assets 69,000                      
Goodwill 93,435                      
Total assets: 178,215                      
Liabilities:                        
Accounts payable 10,861                      
Other liabilities 3,700                      
Total liabilities: 14,561                      
Net assets acquired 163,654                      
Subordinated Debt [Member] | UniRush, LLC [Member]                        
Business Acquisition [Line Items]                        
Cash raised from debt 20,000                      
Term Facility [Member] | Line of Credit [Member] | UniRush, LLC [Member]                        
Business Acquisition [Line Items]                        
Note payable, carrying value 95,000                      
Customer Relationships [Member] | UniRush, LLC [Member]                        
Liabilities:                        
Finite-lived intangibles 58,500                      
Trade Names [Member] | UniRush, LLC [Member]                        
Liabilities:                        
Finite-lived intangibles $ 5,500                      
Acquired finite-lived intangible assets, weighted average useful life                   15 years    
Minimum [Member] | Customer Relationships [Member] | UniRush, LLC [Member]                        
Liabilities:                        
Acquired finite-lived intangible assets, weighted average useful life                   5 years    
Maximum [Member] | Customer Relationships [Member] | UniRush, LLC [Member]                        
Liabilities:                        
Acquired finite-lived intangible assets, weighted average useful life                   10 years