DISCONTINUED OPERATIONS - Balance Sheets Information of Installation Services and Other Discontinued Activities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Assets of discontinued operations:
Prepaid and other current assets	$ 487	$ 605
Other long-term assets	2,623	3,424
Total assets of discontinued operations	3,110	4,029
Liabilities of discontinued operations:
Accrued liabilities, current	30,806	3,280
Other long-term liabilities	3,825	3,794
Total liabilities of discontinued operations	$ 34,631	$ 7,074