LONG-TERM DEBT - Interest Rate on Borrowings Outstanding (Details)	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Weighted average interest rate	7.20%	7.00%
ABL Revolver
Debt Instrument [Line Items]
Interest rate	4.00%	2.90%
Term Loan B
Debt Instrument [Line Items]
Interest rate	7.30%	7.10%
Promissory Note
Debt Instrument [Line Items]
Interest rate	2.90%	2.90%