XML 87 R63.htm IDEA: XBRL DOCUMENT v3.19.1
Acquisitions - Northwest Retail Acquisition (Details)
$ in Thousands
12 Months Ended
Mar. 23, 2018
USD ($)
gasoline_store_facility
Dec. 31, 2018
USD ($)
gasoline_store_facility
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Business Acquisition [Line Items]        
Convenience store facilities | gasoline_store_facility   34    
Goodwill   $ 153,397 $ 107,187 $ 105,732
Acquisition and integration costs   10,319 $ 395 $ 5,294
Northwest Retail        
Business Acquisition [Line Items]        
Convenience store facilities | gasoline_store_facility 21      
Number of leased retail gasoline | gasoline_store_facility 12      
Payments to acquire businesses $ 74,500      
Goodwill 46,210      
Acquisition and integration costs   $ 600    
Retail | Northwest Retail        
Business Acquisition [Line Items]        
Goodwill $ 46,200