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Note 6 - Stock-based Compensation (Tables)

9 Months Ended

Jun. 30, 2018

Notes Tables

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

		Nine Months Ended
		June 30,				July 1,
		2018				2017
Risk-free interest rate			2.72	%			2.03	%
Dividend yield			0.40	%			0.33	%
Expected volatility			37.74	%			38.79	%
Expected term (in years)			4.89				5.12

Share-based Compensation, Stock Options, Activity [Table Text Block]

																	Contractual			Aggregate
		Options				Exercise Price Per Share											Term - Weighted			Intrinsic
		Outstanding											Weighted				Average			Value
		(in thousands)				Range							Average				(in years)			(in thousands)
Outstanding at September 30, 2017			392			$	9.16	-	$	37.06			$	23.40
Granted			44				29.69	-		29.69				29.69
Exercised			(42	)			9.16	-		23.95				17.81
Forfeited			(9	)			23.95	-		37.06				29.88
Outstanding at June 30, 2018			385				10.23	-		37.06				24.59			7.38			$	3,565
Vested and anticipated to vest in the future at June 30, 2018			383											24.56			7.38				3,548
Exercisable at June 30, 2018			201											21.04			6.24				2,540

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units 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			24				29.69
Released			(26	)			25.04
Forfeited			(4	)			29.60
Balance, June 30, 2018			122				26.74

Restricted Stock Units (RSUs) [Member]

Notes Tables

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

		Three Months Ended								Nine Months Ended
		June 30,				July 1,				June 30,				July 1,
(In thousands)		2018				2017				2018				2017
Restricted stock unit grants:
Units			-				-				24				19
Market value		$	-			$	-			$	712			$	690
Compensation expense			117				132				719				758

Employee Stock Option [Member]

Notes Tables

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

		Three Months Ended								Nine Months Ended
		June 30,				July 1,				June 30,				July 1,
(In thousands)		2018				2017				2018				2017
Compensation expense		$	51			$	78			$	522			$	585

X

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Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

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