XML 82 R55.htm IDEA: XBRL DOCUMENT v3.10.0.1
Acquisitions Narrative (Details)
$ in Thousands
Mar. 01, 2018
USD ($)
storage_tank
underground_saltwell
Sep. 15, 2017
USD ($)
mi
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Business Acquisition [Line Items]        
Intangible assets     $ 154,038 $ 15,917
Property, plant and equipment     312,562 $ 255,068
Big Spring Logistic Assets        
Business Acquisition [Line Items]        
Purchase price of asst acquisition $ 170,800      
Number of storage tanks | storage_tank 75      
Number of underground saltwells | underground_saltwell 4      
Excess of cash paid over carrying value $ 98,800      
Carrying value of assets acquired 72,000      
Assumed asset retirement obligation 800      
Capitalized acquisition costs     $ 400  
Intangible assets $ 144,200      
Amortization period 20 years      
Big Spring Pipeline        
Business Acquisition [Line Items]        
Purchase price of asst acquisition   $ 9,000    
Intangible assets   $ 2,600    
Length of pipeline | mi   40    
Property, plant and equipment   $ 6,400