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Note 10 - Per Share Data - Antidilutive Securities Excluded from Computation (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Antidilutive securities (in shares)		1,205,829		1,146,898
Warrant [Member]
Antidilutive securities (in shares)	1,047,296		0
Share-based Payment Arrangement, Option [Member]
Antidilutive securities (in shares)	150,000		153,055
Restricted Stock Units (Stock Settled) [Member]
Antidilutive securities (in shares)	204,591		181,730

X

- Definition

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.

+ References

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 http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

+ Details

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