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DISCONTINUED OPERATIONS - Summary of Balance sheets information of installation services and other discontinued activities (Details) - Installation Services and Other Discontinued Activities - Discontinued Operations - USD ($) $ in Thousands | Sep. 30, 2025 | Sep. 30, 2024
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Prepaid and other current assets | $ 1,302 | $ 648
Other long-term assets | 4,699 | 3,417
Total assets of discontinued operations | 6,001 | 4,065
Accrued liabilities, current | 3,956 | 4,498
Other long-term liabilities | 4,770 | 3,270
Total liabilities of discontinued operations | $ 8,726 | $ 7,768

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