Note 7 - Stock-based Compensation - Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Apr. 02, 2022 USD ($) $ / shares shares
Options outstanding, balance (in shares) | shares	428
Weighted average exercise price per share (in dollars per share) | $ / shares	$ 27.73
Options outstanding, granted (in shares) | shares	36
Weighted average exercise price per share, granted (in dollars per share) | $ / shares	$ 38.54
Options outstanding, forfeited (in shares) | shares	(60)
Weighted average exercise price per share, forfeited (in dollars per share) | $ / shares	$ 29.29
Options outstanding, exercised (in shares) | shares	(10)
Weighted average exercise price per share, exercised (in dollars per share) | $ / shares	$ 19.14
Aggregate intrinsic value, exercised | $	$ 254
Options outstanding, balance (in shares) | shares	394
Weighted average exercise price per share (in dollars per share) | $ / shares	$ 28.73
Contractual term - weighted average, balance (Year)	7 years 4 months 28 days
Aggregate intrinsic value, outstanding | $	$ 3,622
Options outstanding, vested and anticipated to vest in future (in shares) | shares	379
Weighted average exercise price per share, vested and anticipated to vest in future (in dollars per share) | $ / shares	$ 28.58
Contractual term - weighted average, vested and anticipated to vest in future (Year)	7 years 4 months 6 days
Aggregate intrinsic value, vested and anticipated to vest in future | $	$ 3,533
Options outstanding, exercisable (in shares) | shares	224
Weighted average exercise price per share, exercisable (in dollars per share) | $ / shares	$ 28.08
Contractual term - weighted average, exercisable (Year)	6 years 4 months 9 days
Aggregate intrinsic value, exercisable | $	$ 2,139