Note 18 - Subsequent Events (Details Textual) - Subsequent Event [Member] $ in Millions	Nov. 09, 2021 USD ($) shares
Stock Subscription Agreement, Cash Payment Remitted \| $	$ 2.1
The Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) \| shares	3,000,000

Number of additional shares authorized for issuance under share-based payment arrangement.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration