Warrants At Relative Fair Value and Beneficial Conversion Feature at Intrinsic Value (Details) $ in Thousands	1 Months Ended
Jan. 30, 2019 USD ($)
Convertible Promisssory Notes [Abstract]
Warrants At Fair Value Of Redemption Provision	$ 1,465
Relative Fair Value Of Equity Classified Warrants	858
Warrants At Beneficial Conversion Feature	2,677
Net proceeds of January 2019 Note	$ 5,000

Proceeds from issuance of convertible promissory notes.

No definition available.

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Namespace Prefix:	cydy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration