Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable - Summary (Details)

v3.10.0.1
Accounts Receivable - Summary (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Accounts Receivable    
Related party receivables $ 16,662 $ 16,022
Third-party receivables 23,299 1,527
Revenue receivable    
Accounts Receivable    
Related party receivables 16,508 13,601
Third-party receivables 20,125 1,153
Transaction purchase price settlement    
Accounts Receivable    
Related party receivables 0 2,381
Third-party receivables 0 0
Joint interest billings    
Accounts Receivable    
Related party receivables 135 20
Third-party receivables 2,547 83
Other    
Accounts Receivable    
Related party receivables 19 20
Third-party receivables $ 627 $ 291