Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Oil and Gas Property Acquisitions and Divestiture (Details Textual)

v3.19.3
Note 7 - Oil and Gas Property Acquisitions and Divestiture (Details Textual)
$ in Thousands
9 Months Ended
Aug. 30, 2019
USD ($)
Sep. 28, 2018
USD ($)
Apr. 05, 2018
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Jun. 26, 2019
USD ($)
Payments to Acquire Oil and Gas Property and Equipment, Total       $ 167,718 $ 16,782  
Permian Basin [Member]            
Proceeds from Sale of Productive Assets, Total   $ 56,600        
Heidelberg Field Acquisition [Member]            
Percentage of Non-operated Working Interest Acquired     9.375%      
Payments to Acquire Businesses, Gross     $ 31,100      
Payments to Acquire Businesses, Net of Cash Acquired, Total     $ 16,800      
Oil and Gas Producing Properties in the Eastern Region of the Gulf of Mexico, Offshore Alabama and Related Processing Facilities [Member]            
Asset Purchase Agreement, Amount           $ 200,000
Payments to Acquire Oil and Gas Property and Equipment, Total $ 167,569          
Deposit for Acquisition $ 10,000          
Asset Purchase Agreement, Number of Offshore Producing Fields 9