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Note 13 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value Recurring Basis (Details) - USD ($)	Feb. 29, 2020	Aug. 31, 2019
Available for sale securities	$ 6,512,166	$ 3,565,258
Fair Value, Inputs, Level 1 [Member]
Available for sale securities	6,512,166	3,565,258
Fair Value, Inputs, Level 2 [Member]
Available for sale securities
Fair Value, Inputs, Level 3 [Member]
Available for sale securities

X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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Balance Type:
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X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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