Quarterly report pursuant to Section 13 or 15(d)

Leases (Details)

v3.19.3
Leases (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Mar. 31, 2019
Sep. 30, 2019
Dec. 31, 2018
Lessee, Lease, Description [Line Items]        
Operating Lease, Right-of-Use Asset $ 2,901 $ 2,500 $ 2,901 $ 0
Operating Lease, Payments     442  
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability 800 2,500 3,325  
Operating Lease, Liability, Current 858   858 0
Operating Lease, Liability, Noncurrent 2,389   2,389 $ 0
Operating Lease, Liability $ 3,247 $ 2,800 $ 3,247  
Operating Lease, Weighted Average Remaining Lease Term 4 years 3 months 18 days   4 years 3 months 18 days  
Operating Lease, Weighted Average Discount Rate, Percent 5.97%   5.97%  
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year $ 217   $ 217  
Lessee, Operating Lease, Liability, Payments, Due Year Two 847   847  
Lessee, Operating Lease, Liability, Payments, Due Year Three 830   830  
Lessee, Operating Lease, Liability, Payments, Due Year Four 833   833  
Lessee, Operating Lease, Liability, Payments, Due Year Five 833   833  
Lessee, Operating Lease, Liability, Payments, Due after Year Five 139   139  
Lessee, Operating Lease, Liability, Payments, Due 3,699   3,699  
Lessee, Operating Lease, Liability, Undiscounted Excess Amount (452)   (452)  
Operating Lease, Cost 208   565  
Short-term Lease, Cost 9,969   33,024  
Variable Lease, Cost 6,777   17,420  
Amounts charged as dilling costs (9,224)   (30,865)  
Lease, Cost 7,730   20,144  
Natural Gas, Gathering, Transportation, Marketing and Processing [Member]        
Lessee, Lease, Description [Line Items]        
Lease, Cost 3,900   8,900  
Operating Expense [Member]        
Lessee, Lease, Description [Line Items]        
Lease, Cost 3,600   10,700  
General and Administrative Expense [Member]        
Lessee, Lease, Description [Line Items]        
Lease, Cost $ 200   $ 600  
Minimum [Member]        
Lessee, Lease, Description [Line Items]        
Lessee, Operating Lease, Term of Contract 2 years   2 years  
Maximum [Member]        
Lessee, Lease, Description [Line Items]        
Lessee, Operating Lease, Term of Contract 5 years   5 years