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OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Components of Other Comprehensive Income (Loss) and the Related Income Tax Effects (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Before Tax Amount [Member] |  |  |  |
Unrealized holding gain (loss) arising during period on: |  |  |  |
Available-for-sale investments | $ 115 | $ (14) | $ 141 | $ 487
Total unrealized holding gain (loss) arising during period | 115 | (14) | 141 | 487
Other comprehensive income (loss), net | 115 | (14) | 141 | 487
Tax Expense [Member] |  |  |  |
Unrealized holding gain (loss) arising during period on: |  |  |  |
Available-for-sale investments | (28) | 4 | (35) | (120)
Total unrealized holding gain (loss) arising during period | (28) | 4 | (35) | (120)
Other comprehensive income (loss), net | (28) | 4 | (35) | (120)
Net of Tax Amount [Member] |  |  |  |
Unrealized holding gain (loss) arising during period on: |  |  |  |
Available-for-sale investments | 87 | (10) | 106 | 367
Total unrealized holding gain (loss) arising during period | 87 | (10) | 106 | 367
Other comprehensive income (loss), net | $ 87 | $ (10) | $ 106 | $ 367

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- Definition Amount, after tax and before adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A + Details
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