Note 9 - Stock-based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Options outstanding, balance (in shares)	482	388	264
Weighted average exercise price per share (in dollars per share)	$ 24.90	$ 26.16	$ 29.25
Options outstanding, granted (in shares)	74	121	129
Weighted average exercise price per share, granted (in dollars per share)	$ 34.76	$ 21.08	$ 19.74
Options outstanding, exercised (in shares)	(128)		(5)
Weighted average exercise price per share, exercised (in dollars per share)	$ 21.17		$ 23.95
Aggregate intrinsic value, exercised	$ 2,212		$ 21
Options outstanding, forfeited (in shares)		(27)
Weighted average exercise price per share, forfeited (in dollars per share)		$ 25.88
Options outstanding, balance (in shares)	428	482	388	264
Weighted average exercise price per share (in dollars per share)	$ 27.72	$ 24.90	$ 26.16	$ 29.25
Contractual term - weighted average, balance (Year)	6 years 5 months 23 days
Aggregate intrinsic value, outstanding	$ 5,006
Options outstanding, vested and anticipated to vest in future (in shares)	416
Weighted average exercise price per share, vested and anticipated to vest in futur (in dollars per share)	$ 27.70
Contractual term - weighted average, vested and anticipated to vest in future (Year)	6 years 4 months 28 days
Aggregate intrinsic value, vested and anticipated to vest in future	$ 4,867
Options outstanding, exercisable (in shares)	246
Weighted average exercise price per share, exercisable (in dollars per share)	$ 28.75
Contractual term - weighted average, exercisable (Year)	4 years 8 months 26 days
Aggregate intrinsic value, exercisable	$ 2,604
Minimum [Member]
Exercise price per share, balance, lower (in dollars per share)	$ 17.22	10.23	10.23	10.23
Exercise price per share, granted, lower (in dollars per share)	29.43	19.86	18.25
Exercise price per share, exercised, lower (in dollars per share)	10.23		18.05
Exercise price per share, forfeited, lower (in dollars per share)		18.05
Maximum [Member]
Exercise price per share, balance, upper (in dollars per share)	41.87	41.85	41.85	$ 41.85
Exercise price per share, granted, upper (in dollars per share)	41.87	22.09	21.57
Exercise price per share, exercised, upper (in dollars per share)	$ 34.49		$ 26.75
Exercise price per share, forfeited, upper (in dollars per share)		$ 41.85