DEBT - Debt Covenants (Details)	12 Months Ended
	Jun. 30, 2017
September 30, 2017
Debt Instrument [Line Items]
Total net leverage ratio	5.00
December 31, 2017
Debt Instrument [Line Items]
Total net leverage ratio	5.00
March 31, 2018
Debt Instrument [Line Items]
Total net leverage ratio	4.75
June 30, 2018
Debt Instrument [Line Items]
Total net leverage ratio	4.75
September 30, 2018
Debt Instrument [Line Items]
Total net leverage ratio	4.50
December 31, 2018
Debt Instrument [Line Items]
Total net leverage ratio	4.50
March 31, 2019
Debt Instrument [Line Items]
Total net leverage ratio	4.25
June 30, 2019
Debt Instrument [Line Items]
Total net leverage ratio	4.25
September 30, 2019
Debt Instrument [Line Items]
Total net leverage ratio	4.00
December 31, 2019
Debt Instrument [Line Items]
Total net leverage ratio	4.00
March 31, 2020
Debt Instrument [Line Items]
Total net leverage ratio	4.00
June 30, 2020
Debt Instrument [Line Items]
Total net leverage ratio	4.00
September 30, 2020
Debt Instrument [Line Items]
Total net leverage ratio	4.00