Note 6 - Treasury Stock (Details Textual) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Treasury Stock, Common, Shares (in shares)	1,233,052	1,206,741
Treasury Stock, Common, Value	$ 2,602	$ 2,568

Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480100/505-10-S45-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147481520/505-30-50-4

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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-URI https://asc.fasb.org/1943274/2147481549/505-30-45-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
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-Paragraph 6
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-URI https://asc.fasb.org/1943274/2147481108/505-30-30-6

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
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Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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-Paragraph 1
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