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Note 2 - Significant Accounting Policies	9 Months Ended
	Sep. 30, 2023
Notes to Financial Statements
Significant Accounting Policies [Text Block]	Note 2.  Significant Accounting Policies ​ There have been no changes in the Company’s significant accounting policies for the three and nine months ended September 30, 2023, as compared to the significant accounting policies described in its 2022 Annual Report. ​ Recent Accounting Pronouncements ​​ Recent Accounting Pronouncements Yet to be Adopted To date, there have been no recent accounting pronouncement not yet effective that have significance, or potential significance, to our Consolidated Financial Statements.

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- Definition

The entire disclosure for all significant accounting policies of the reporting entity.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483426/235-10-50-1

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-Topic 235
-Name Accounting Standards Codification
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