DISCONTINUED OPERATIONS (Details) - Summary of Discontinued Operations - USD ($) $ in Thousands	Dec. 31, 2017	Sep. 30, 2017
Assets of discontinued operations:
Prepaid and other current assets	$ 328	$ 329
Other long-term assets	2,952	2,960
Total assets of discontinued operations	3,280	3,289
Liabilities of discontinued operations:
Accrued liabilities, current	3,924	8,342
Other long-term liabilities	5,225	3,037
Total liabilities of discontinued operations	$ 9,149	$ 11,379