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Note G - Treasury Stock (Details Textual) - USD ($)	Jun. 30, 2023	Dec. 31, 2022	Nov. 30, 2017
Treasury Stock, Common, Shares (in shares)	271,396	127,237
Treasury Stock, Common, Value	$ 8,095,000	$ 4,000,000
September 2011 Reauthorization [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)			500,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares)	186,994
Treasury Stock, Common, Shares (in shares)	271,396
Treasury Stock, Common, Value	$ 8,095,000

X

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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X

- Definition

Number of previously issued common shares repurchased by the issuing entity and held in treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481549/505-30-45-1

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481520/505-30-50-4

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-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.30)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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