Note 9 - Earnings (Loss) Per Share Basic and Fully Diluted - Antidilutive Securities (Details) - shares shares in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Antidilutive securities (in shares)	46,341	45,380
Share-Based Payment Arrangement, Option [Member]
Antidilutive securities (in shares)	6,003	6,955
Warrant [Member]
Antidilutive securities (in shares)	40,338	38,425

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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