Annual report pursuant to Section 13 and 15(d)

Acquisitions - WTL Oil Acquisition Narrative (Details)

v3.19.3.a.u2
Acquisitions - WTL Oil Acquisition Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
May 31, 2018
Jun. 05, 2017
May 26, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
[1]
Business Acquisition [Line Items]            
Total purchase price   $ 25,762 $ 36,320      
Cash paid to acquire a business       $ 0 $ 20,824 $ 42,008
WTL Oil LLC            
Business Acquisition [Line Items]            
Total purchase price $ 6,100          
Acquisition related costs       $ 100    
[1] (a) Financial information includes the results attributable to Sturgeon for the entire period presented. See Note 4.