Note 7 - Earnings Per Share - Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Basic weighted-average shares (in shares)	30,708,000	30,385,000	30,526,000	30,336,000
Unexercised options and unvested RSUs (in shares)	140,000	242,000	0	0
Diluted weighted-average shares (in shares)	30,848,000	30,627,000	30,526,000	30,336,000