Loss Per Share (Details Narrative)	May 31, 2020 shares
Subsequent Event [Member]
Total dilutive potential common shares, including outstanding common stock	723,000,000,000

Total dilutive potential common shares, including outstanding common stock.

No definition available.

Name:	RNVA_TotalDilutivePotentialCommonSharesIncludingOutstandingCommonStock
Namespace Prefix:	RNVA_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration