DISCONTINUED OPERATIONS (Details) - Summary of Discontinued Operations - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Assets of discontinued operations:
Prepaid and other current assets	$ 325	$ 324
Liabilities of discontinued operations:
Accrued liabilities, current	6,882	7,210
PPC and Installation Services [Member]
Assets of discontinued operations:
Prepaid and other current assets	325	324
Other long-term assets	2,909	2,916
Total assets of discontinued operations	3,234	3,240
Liabilities of discontinued operations:
Accrued liabilities, current	6,882	7,210
Other long-term liabilities	2,510	2,647
Total liabilities of discontinued operations	$ 9,392	$ 9,857