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Note 19 - Subsequent Events	9 Months Ended
	Sep. 30, 2024
Notes to Financial Statements
Subsequent Events [Text Block]	Note 19.  Subsequent Events ​ On November 5, 2024, the Company provided notice of its termination, effective on November 6, 2024, of the Equity Distribution Agreement dated March 13, 2024 between the Company and Raymond James & Associates in connection with the Company’s At-The-Market equity offering program (the “ATM program”).  As of the termination date, the ATM program had generated total gross proceeds of $59.9 million.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/855/tableOfContent

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-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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