DISCONTINUED OPERATIONS - Balance Sheets Information of Installation Services and Other Discontinued Activities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Sep. 30, 2023
Assets of discontinued operations:
Other long-term assets	$ 4,138	$ 4,290
Discontinued Operations
Assets of discontinued operations:
Prepaid and other current assets	984	1,001
Other long-term assets	4,138	4,290
Total assets of discontinued operations	5,122	5,291
Liabilities of discontinued operations:
Accrued liabilities, current	4,216	7,148
Other long-term liabilities	4,487	4,650
Total liabilities of discontinued operations	$ 8,703	$ 11,798