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Note 4 - Earnings Per Share (Details Textual) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Treasury Stock, Common, Shares (in shares)	1,835,452		1,671,231
Treasury Stock, Shares, Acquired (in shares)	164,221	32,150
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number (in shares)	70,219	76,601
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	56,361	65,790

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.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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

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