DISCONTINUED OPERATIONS - Balance Sheets Information of Installation Services and Other Discontinued Activities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Assets of discontinued operations:
Other long-term assets	$ 4,104	$ 4,290
Discontinued Operations
Assets of discontinued operations:
Prepaid and other current assets	980	1,001
Other long-term assets	4,104	4,290
Total assets of discontinued operations	5,084	5,291
Liabilities of discontinued operations:
Accrued liabilities, current	2,753	7,148
Other long-term liabilities	5,241	4,650
Total liabilities of discontinued operations	$ 7,994	$ 11,798