Note 8 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

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

	Number of Stock Options			Weighted-Average Exercise Price		Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value
Outstanding as of December 31, 2022		8,680		$	12.95
Granted		-			-
Exercised		(6,473	)		12.52
Forfeited/cancelled/expired		-			-
Outstanding as of March 31, 2023		2,207			14.24		0.41	$	7,592
Exercisable as of March 31, 2023		2,207		$	14.24		0.41	$	7,592

Nonvested Restricted Stock Shares Activity [Table Text Block]

	Nonvested Shares			Weighted Average Grant Date Fair Value
Nonvested as of December 31, 2022		85,931		$	26.20
Granted		50,617			17.93
Vested		(24,445	)		27.49
Forfeited/cancelled/expired		(1,415	)		29.46
Nonvested as of March 31, 2023		110,688		$	22.09

Schedule of Nonvested Performance-Based Units Activity [Table Text Block]

	Units (expected)			Units (maximum)		Weighted Average Grant Date Fair Value
Unearned as of December 31, 2022		195,265				$	17.98
Awarded		85,158					17.93
Vested shares		(116,192	)				10.77
Unearned as of March 31, 2023		164,231			233,087	$	23.06

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

	Units (expected)			Weighted Average Grant Date Fair Value
Unearned as of December 31, 2022		120,035		$	23.84
Awarded		146,857			18.98
Vested shares		(70,669	)		19.19
Unearned as of March 31, 2023		196,223		$	21.88