DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Interest rate swap agreements - Cash flow hedges - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
DERIVATIVE FINANCIAL INSTRUMENTS
Notional amount of derivative instrument	$ 325.0	$ 0.0
Annual reduction in notional amount of derivative	$ 12.5

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration