Note 14 - Subsequent Events (Details) - Subsequent Event [Member] - Merger Agreement - Elevate	Feb. 09, 2020 $ / shares shares
Share Price \| $ / shares	$ 1.19
Expiration of shares \| shares	10,576,487

Number of shares under non-option equity instrument agreements that were either cancelled or expired.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)-(4)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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