Note 7 - Stock-based Compensation - Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Jul. 03, 2021 USD ($) $ / shares shares	Oct. 03, 2020 $ / shares shares
Options outstanding, balance (in shares) | shares	482
Weighted average exercise price per share (in dollars per share)	$ 24.90
Options outstanding, granted (in shares) | shares	42
Weighted average exercise price per share, granted (in dollars per share)	$ 29.43
Options outstanding, exercised (in shares) | shares	(48)
Weighted average exercise price per share, exercised (in dollars per share)	$ 18.62
Aggregate intrinsic value, exercised | $	$ 606
Options outstanding, balance (in shares) | shares	476	482
Weighted average exercise price per share (in dollars per share)	$ 25.94	$ 24.90
Contractual term - weighted average, balance (Year)	6 years 5 months 8 days
Aggregate intrinsic value, balance | $	$ 4,864
Options outstanding, vested and anticipated to vest in future (in shares) | shares	463
Weighted average exercise price per share, vested and anticipated to vest in futur (in dollars per share)	$ 25.98
Contractual term - weighted average, vested and anticipated to vest in future (Year)	6 years 4 months 9 days
Aggregate intrinsic value, vested and anticipated to vest in future | $	$ 4,706
Options outstanding, exercisable (in shares) | shares	280
Weighted average exercise price per share, exercisable (in dollars per share)	$ 27.90
Contractual term - weighted average, exercisable (Year)	4 years 9 months 29 days
Aggregate intrinsic value, exercisable | $	$ 2,352
Minimum [Member]
Exercise price per share, balance, lower (in dollars per share)	$ 16.45	10.23
Exercise price per share, granted, lower (in dollars per share)	29.43
Exercise price per share, exercised, lower (in dollars per share)	10.23
Exercise price per share, balance, lower (in dollars per share)	16.45	$ 10.23
Maximum [Member]
Exercise price per share, balance, upper (in dollars per share)	41.85
Exercise price per share, granted, upper (in dollars per share)	29.43
Exercise price per share, exercised, upper (in dollars per share)	26.75
Exercise price per share, balance, upper (in dollars per share)	$ 41.85