DISCONTINUED OPERATIONS - Balance Sheets Information of Installation Services and Other Discontinued Activities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Assets of discontinued operations:
Other long-term assets	$ 4,141	$ 4,586
Discontinued Operations
Assets of discontinued operations:
Prepaid and other current assets	984	1,189
Other long-term assets	4,141	4,586
Total assets of discontinued operations	5,125	5,775
Liabilities of discontinued operations:
Accrued liabilities, current	7,260	12,656
Other long-term liabilities	5,650	4,262
Total liabilities of discontinued operations	$ 12,910	$ 16,918