Note 9 - Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2025

Notes Tables

Shares Available Under Long-term Incentive Plan [Table Text Block]

	June 30, 2025			December 31, 2024
Approved and authorized shares		16,414,015			16,414,015
Shares subject to awards issued under plan		(15,863,795	)		(15,808,671	)
Shares available for future grant		550,220			605,344

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

	Stock Options			Average Exercise Price		Remaining Term in Years		Intrinsic Value (in thousands)
Outstanding at December 31, 2023		13,449,061		$	11.95		6.3	$	47,672
Forfeitures		(4,999	)	$	26.44
Outstanding at December 31, 2024		13,444,062		$	11.95		5.3	$	53,093
Forfeitures		(9,668	)	$	24.99
Outstanding at June 30, 2025		13,434,394		$	11.94		4.8	$	—
Vested at December 31, 2024		13,444,062		$	11.95		5.3	$	53,093
Exercisable at December 31, 2024		11,495,062		$	12.19		5.9	$	44,907
Vested at June 30, 2025		13,434,394		$	11.94		4.8	$	—
Exercisable at June 30, 2025		11,485,394		$	12.18		5.4	$	—