Note 15 - Acquisition - Consideration Transferred (Details) (Parentheticals) - Woorank SRL ([Member]	Mar. 01, 2021 $ / shares shares
Shares issued for acquisition (in shares) \| shares	29,433
Price per share (in dollars per share) \| $ / shares	$ 3.38

Number of shares of equity interests issued or issuable to acquire entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

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