Note 10 - Stock-based Compensation - Summary of Stock Option Activity (Details)	12 Months Ended
	May 03, 2025 $ / shares shares
Options outstanding, beginning of year (in shares) | shares	299,900
Options outstanding, beginning of year (in dollars per share) | $ / shares	$ 25.48
Granted (in shares) | shares	0
Granted (in dollars per share) | $ / shares	$ 0
Exercised (in shares) | shares	(51,700)
Exercised (in dollars per share) | $ / shares	$ 9.95
Forfeited or cancelled (in shares) | shares	(5,400)
Forfeited or cancelled (in dollars per share) | $ / shares	$ 20.32
Options outstanding, end of year (in shares) | shares	242,800
Options outstanding, end of year (in dollars per share) | $ / shares	$ 26.71
Options vested and exercisable, end of year (in shares) | shares	173,822
Options vested and exercisable, end of year (in dollars per share) | $ / shares	$ 26.72