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SHORT-TERM INVESTMENTS - Realized gains and losses (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items] |  |
Amortized Cost | $ 113,943,845 | $ 109,833,757
Unrealized Losses | (43,248) | (58,666)
Accrued Investment Income | $ 473,892 | $ 385,938
Accrued Investment Income - extensible enumeration | Short-term investments (Note 4) | Short-term investments (Note 4)
Estimated Fair Value | $ 114,374,489 | $ 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 | 41,141,314 | 89,688,690
Accrued Investment Income | 172,154 | 316,960
Estimated Fair Value | 41,313,468 | 90,005,650
U.S. Treasury securities |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items] |  |
Amortized Cost | 72,802,531 | 11,149,053
Unrealized Losses | (43,248) | (39,590)
Accrued Investment Income | 301,738 | 39,720
Estimated Fair Value | $ 73,061,021 | 11,149,183
Corporate debt securities |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items] |  |
Amortized Cost |  | 3,034,417
Unrealized Losses |  | (19,076)
Accrued Investment Income |  | 29,258
Estimated Fair Value |  | 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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- Definition 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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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