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SHORT-TERM INVESTMENTS - Realized gains and losses (Details) - USD ($)	6 Months Ended
	Mar. 31, 2023	Sep. 30, 2022
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized Cost	$ 112,446,161	$ 109,833,757
Unrealized Losses	(88,354)	(58,666)
Accrued Interest	$ 385,230	$ 385,938
Accrued Interest - extensible enumeration	Short-term investments (Note 4)	Short-term investments (Note 4)
Estimated Fair Value	$ 112,743,037	$ 110,161,029
Unrealized loss position	0
Gains or losses on sales of short-term investments	0
GICs and Term deposits
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized Cost	40,043,353	89,688,690
Accrued Interest	279,493	316,960
Estimated Fair Value	40,322,846	90,005,650
U.S. Treasury securities
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized Cost	71,334,448	11,149,053
Unrealized Losses	(84,966)	(39,590)
Accrued Interest	105,093	39,720
Estimated Fair Value	71,354,575	11,149,183
Corporate debt securities
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized Cost	1,068,360	3,034,417
Unrealized Losses	(3,388)	(19,076)
Accrued Interest	644	29,258
Estimated Fair Value	$ 1,065,616	3,044,599
Commercial paper
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized Cost		5,961,597
Estimated Fair Value		$ 5,961,597

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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