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Note 11 - Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

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

		2022				2021				2020
Expected option life in years(1)			6.0				6.0				6.0
Expected stock price volatility percentage(2)			26	%			27	%			28	%
Risk-free interest rate percentage(3)			2.9	%			1.2	%			0.6	%
Expected dividend yield(4)			1.13	%			0.91	%			0.80	%
Fair value as of the date of grant		$	5.79			$	4.29			$	3.85

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

		Shares				Weighted Average Exercise Price
Outstanding at December 31, 2021			1,029,466			$	14.00
Granted			141,500				21.05
Exercised			(201,975	)			9.89
Forfeited			(53,600	)			16.61
Outstanding at December 31, 2022			915,391			$	15.84
Exercisable at December 31, 2022			371,241			$	13.38

Schedule of Nonvested Share Activity [Table Text Block]

		Shares				Weighted Average Grant Date Fair Value				Weighted Average Remaining Contractual Life (in Years)
Nonvested at December 31, 2021			631,051			$	4.14				5.9
Granted			141,500				5.79				6.6
Vested			(174,801	)			3.95				4.0
Forfeited			(53,600	)			4.27				5.3
Nonvested at December 31, 2022			544,150			$	4.62				5.5

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

		Shares					Weighted Average Grant Date Fair Value
Nonvested at December 31, 2021			132,126				$	16.10
Granted			123,900					18.79
Vested			(113,996	)	(1)			17.13
Forfeited			(20,163	)				16.13
Nonvested at December 31, 2022			121,867				$	17.83

X

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