FAIR VALUE MEASUREMENTS - Narrative (Details)	Apr. 30, 2021
Series B Preferred Stock
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mandatory redemption discount rate	0.0725

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