Note 10 - Stock-based Compensation - Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 2025 shares
Options outstanding, number of options (in shares)	570,839
Granted, number of options (in shares)	0
Stock option exercises (in shares)	120,458
Canceled or forfeited, number of options (in shares)	0
Options outstanding, number of options (in shares)	450,381
Options exercisable as of March 31, 2025 (in shares)	450,381