RECENT ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
		Dec. 31, 2018	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Oct. 01, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Oct. 01, 2018	Sep. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
ROU assets			$ 154,955			$ 163,552
Lease liabilities			160,668			$ 163,676
Cumulative impact of adoption		$ (471,561)	$ (508,455)	$ (476,454)	$ (494,693)		$ (477,763)	$ (488,165)	$ (474,284)		$ (474,391)
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201409Member	us-gaap:AccountingStandardsUpdate201602Member
Retained Earnings
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative impact of adoption		$ (550,460)	$ (591,482)	$ (573,209)	$ (575,736)		$ (568,516)	$ (555,780)	$ (545,600)		(550,523)
Cumulative Effect, Period of Adoption, Adjustment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative impact of adoption	[1]										5,673
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative impact of adoption	[1]									$ 5,673	$ 5,673

[1] See Note 14 - Recent Accounting Pronouncements and Note 3 - Revenue for additional information.