Quarterly report pursuant to Section 13 or 15(d)

INCOME TAXES (Details)

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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
May 31, 2021
Feb. 28, 2021
May 31, 2020
Feb. 28, 2021
May 31, 2021
May 31, 2020
Aug. 31, 2020
Income Taxes [Abstract]              
Effective income tax rate 24.70%   24.80%   24.70% 24.60%  
Income Tax Expense (Benefit) [Abstract]              
Current $ (394)   $ 21   $ 5,283 $ 1,265  
Deferred 552   (12)   623 710  
Total 158 $ 5,489 9 $ 5,749 5,906 1,975  
Income Taxes Paid [Abstract]              
Income taxes paid     234   0 1,305  
Deferred Tax Assets (Liabilities) [Abstract]              
Depreciation and depletion (2,244)       (2,244)   $ (1,701)
Non-qualified stock options 528       528   491
Accrued compensation 98       98   167
Deferred revenues 52       52   89
Other 57       57   45
Net operating loss carryforwards 0       0   23
Net deferred tax liability (1,509)       (1,509)   $ (886)
Federal [Member]              
Income Taxes Paid [Abstract]              
Income taxes paid 0   212   0 1,089  
State [Member]              
Income Taxes Paid [Abstract]              
Income taxes paid $ 0   $ 22   $ 0 $ 216