Discontinued Operations - Carrying Amounts of Assets and Liabilities (Details) - USD ($)	Feb. 28, 2023	Aug. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deposits – workers’ compensation	$ 0	$ 0
Deposits – workers’ compensation	0	0
Total current liabilities	1,628,000	1,362,000
Disposal by sale | Overall business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deposits – workers’ compensation	0	0
Total current assets	0	0
Deposits – workers’ compensation	0	0
Total assets	0	0
Accrued workers’ compensation cost	1,628,000	1,362,000
Total current liabilities	1,628,000	1,362,000
Accrued workers’ compensation cost	3,810,000	3,269,000
Total liabilities	5,438,000	4,631,000
Net liability	$ (5,438,000)	$ (4,631,000)