Note 6 - Commitments and Contingencies (Details Textual)	Jul. 24, 2019 USD ($)
Pending Litigation [Member]
Litigation Settlement, Amount Awarded to Other Party	$ 10,000

Amount awarded to other party in judgment or settlement of litigation.

No definition available.

Name:	us-gaap_LitigationSettlementAmountAwardedToOtherParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration