FAIR VALUE OF FINANCIAL INSTRUMENTS Narrative (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Sep. 30, 2019	Mar. 31, 2019
Level 2 fair value measurements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated fair value of debt	$ 170.8	$ 160.3

Represents the quantification of the effect of changes in the valuation technique and related inputs, during the period, used to measure the liability at fair value as of the statement of financial position reporting date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

Name:	us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisDebtInstrumentValuationTechniquesChangeInTechniqueQuantificationOfEffect
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration