SUMMARY OF SIGNIFICANT EVENTS AND ACCOUNTING POLICIES - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended		12 Months Ended
	Oct. 01, 2019	Dec. 31, 2019	Oct. 01, 2019	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 02, 2019	Dec. 31, 2016
SUMMARY OF SIGNIFICANT EVENTS AND ACCOUNTING POLICIES
Financial Designation, Predecessor and Successor [Fixed List]	Predecessor	Successor	Predecessor	Predecessor	Predecessor	Predecessor
Cash and cash equivalents	$ 15,546	$ 5,701	$ 15,546		$ 46,866		$ 15,546
Restricted cash		4,574
Total cash, cash equivalents and restricted cash	$ 29,385	$ 10,275	$ 29,385		$ 46,866	$ 424,071		$ 24