Note 9 - Stock-based Compensation (Tables)

12 Months Ended

Oct. 03, 2020

Notes Tables

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Year Ended
	October 3,			September 28,			September 29,
	2020			2019			2018
Expected term (in years)		4.81			4.59			4.79
Risk-free interest rate		2.75	%		2.03	%		2.71	%
Expected volatility		47.18	%		42.79	%		37.32	%
Expected dividend yield		0.59	%		0.56	%		0.37	%

Share-based Payment Arrangement, Option, Activity [Table Text Block]

									Contractual
				Exercise Price					Term -		Aggregate
				Per Share					Weighted		Intrinsic
	Options						Weighted		Average		Value
(Share amounts in thousands)	Outstanding			Range			Average		(in years)		(in thousands)
Outstanding at September 30, 2017		392		$9.16	-	$37.06	$	23.40
Granted		77		29.69	-	41.85		34.84
Exercised		(196	)	9.16	-	37.06		19.68			$	3,866
Forfeited		(9	)	23.95	-	37.06		29.88
Outstanding at September 29, 2018		264		10.23	-	41.85		29.25
Granted		129		18.25	-	21.57		19.74
Exercised		(5	)	18.05	-	26.75		23.95				21
Outstanding at September 28, 2019		388		10.23	-	41.85		26.16
Granted		121		19.86	-	22.09		21.08
Forfeited		(27	)	18.05	-	41.85		25.88
Outstanding at October 3, 2020		482		10.23	-	41.85		24.90		6.50		160
Vested and anticipated to vest in the future at October 3, 2020		477						24.95		6.47		159
Exercisable at October 3, 2020		283						26.99		4.69		133

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

				Weighted
	Restricted			Average
	Stock Units			Grant Date
(Unit amounts in thousands)	Outstanding			Fair Value
Balance, September 30, 2017		128		$	25.92
Granted		35			33.52
Forfeited		(3	)		29.60
Released		(57	)		22.26
Balance, September 29, 2018		103			30.40
Granted		61			20.18
Released		(49	)		27.64
Balance, September 28, 2019		115			26.16
Granted		68			21.29
Forfeited		(6	)		25.49
Released		(55	)		27.07
Balance, October 3, 2020		122			23.07

Restricted Stock Units (RSUs) [Member]

Notes Tables

Share-based Payment Arrangement, Cost by Plan [Table Text Block]

	Year Ended
	October 3,		September 28,		September 29,
(In thousands)	2020		2019		2018
Restricted stock unit grants:
Units		68		61		35
Market value	$	1,444	$	1,225	$	1,175
Compensation expense		1,218		1,168		1,172