Note 14 - Legal Proceedings (Details Textual)	Jun. 02, 2020 USD ($)
Civil Suit Against Accounting Firm [Member] \| Subsequent Event [Member]
Litigation Settlement, Amount Awarded to Other Party	$ 7,500

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