DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Apr. 30, 2020	Jan. 31, 2020
DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION
Cost of property, plant and equipment	$ 7.1	$ 6.9

Amount of costs incurred related to oil and gas property acquisition, exploration and development activities, including capitalized costs and costs charged to expense.

No definition available.

Name:	us-gaap_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration