INCOME TAXES - Net Operating Loss Carryback (Details) $ in Millions	Jan. 31, 2021 USD ($)
INCOME TAXES
Income tax receivable	$ 12.7

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and other tax receivables expected to be realized or consumed within one year or operating cycle, if longer.

No definition available.

Name:	us-gaap_DeferredIncomeTaxesAndOtherTaxReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant