COMMITMENTS, CONTINGENCIES AND LITIGATION - Financial Covenants (Details)	12 Months Ended
	Dec. 31, 2017 USD ($)
Other Commitments [Line Items]
Maximum total leverage ratio (the ratio of Consolidated Indebtedness to Consolidated EBITDA as defined in the credit agreement) should be equal to or less than:	5.9
Minimum consolidated interest coverage ratio (the ratio of Consolidated EBITDA to Consolidated Interest Expense as defined in the credit agreement) should be equal to or greater than:	2
Limitation on capital expenditure	$ 36,000,000
March 1, 2018 Through September 30, 2019
Other Commitments [Line Items]
Maximum total leverage ratio (the ratio of Consolidated Indebtedness to Consolidated EBITDA as defined in the credit agreement) should be equal to or less than:	5,900.0
September 30, 2019 Through June 30, 2020
Other Commitments [Line Items]
Maximum total leverage ratio (the ratio of Consolidated Indebtedness to Consolidated EBITDA as defined in the credit agreement) should be equal to or less than:	5,500.0
June 30, 2020 Through December 31, 2020
Other Commitments [Line Items]
Maximum total leverage ratio (the ratio of Consolidated Indebtedness to Consolidated EBITDA as defined in the credit agreement) should be equal to or less than:	5,250.00
December 31, 2020 Through September 30, 2021
Other Commitments [Line Items]
Maximum total leverage ratio (the ratio of Consolidated Indebtedness to Consolidated EBITDA as defined in the credit agreement) should be equal to or less than:	4,750.00
September 30, 2021 And Thereafter
Other Commitments [Line Items]
Maximum total leverage ratio (the ratio of Consolidated Indebtedness to Consolidated EBITDA as defined in the credit agreement) should be equal to or less than:	4,500.0
March 31, 2018 Through December 31, 2020
Other Commitments [Line Items]
Minimum consolidated interest coverage ratio (the ratio of Consolidated EBITDA to Consolidated Interest Expense as defined in the credit agreement) should be equal to or greater than:	2,000.00
December 31, 2020 And Thereafter
Other Commitments [Line Items]
Minimum consolidated interest coverage ratio (the ratio of Consolidated EBITDA to Consolidated Interest Expense as defined in the credit agreement) should be equal to or greater than:	2,250.00