Note 5 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Risk-free interest rates	3.86%	-	4.68%
Expected life (in years)	2	-	5.75
Dividend yield	0.59%
Expected volatility (weighted average)	36.0%	-	42.2%

Risk-free interest rates	4.70	%
Expected life (in years)	1
Dividend yield	0.56	%
Expected volatility (weighted average)	34.8	%