Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020
Provision for income taxes	$ 3,293,000	$ 3,174,000
Expected income tax provision at statutory rate	21.00%	21.00%
Effective income tax statutory rate	28.20%	28.90%
GILTI inclusion amount	$ 0
FDII deduction amount	64,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 0	$ 0
Refundable tax credit, percentage	50.00%
Refundable tax credit, estimated amount	$ 5,392,754
Percentage of Foreign derived intangible income	21.875%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	4.60%	5.40%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	(0.30%)	0.40%
GILTI
Expected income tax provision at statutory rate	10.50%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	18.90%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	90.00%
FDII
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	13.125%