LONG-TERM DEBT AND CAPITAL LEASE - Redemption of Senior Secured Notes (Details) - Senior Notes - Senior Secured Notes Due 2024	3 Months Ended
	Mar. 31, 2018
On February 2, 2019 to February 1, 2020
Line of Credit Facility [Line Items]
Percentage Premium	2.00%
On February 2, 2020 to February 1, 2021
Line of Credit Facility [Line Items]
Percentage Premium	1.50%
On February 2, 2021 to February 1, 2022
Line of Credit Facility [Line Items]
Percentage Premium	0.50%
On or after February 2, 2022
Line of Credit Facility [Line Items]
Percentage Premium	0.00%