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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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- 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 http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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