Annual report pursuant to Section 13 and 15(d)

Segment Information (Details) - Schedule of oil extraction and processing segment

v3.21.2
Segment Information (Details) - Schedule of oil extraction and processing segment - Segments [Member] - USD ($)
$ in Thousands
Aug. 31, 2020
Aug. 31, 2019
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]    
Additions to non-current assets $ 2,123 $ 36,298
Reportable segment assets 73,645 72,856
Reportable segment liabilities 19,516 15,037
Oil Extraction [Member]    
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]    
Additions to non-current assets 2,073 12,498
Reportable segment assets 40,405 36,690
Reportable segment liabilities 19,416 11,663
Mining Operations [Member]    
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]    
Additions to non-current assets 50 23,800
Reportable segment assets 33,240 36,166
Reportable segment liabilities $ 100 $ 3,374