Note 12 Stock-Based Compensation (Tables)

9 Months Ended

Jun. 30, 2018

Share-based Compensation [Abstract]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

	Three Months Ended				Nine Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
	(In thousands)
Stock options	$	1,362	$	362	$	5,105	$	1,292
Restricted stock units, including performance based awards	8,399		6,927		23,593		25,616
Total	$	9,761	$	7,289	$	28,698	$	26,908

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	Three Months Ended				Nine Months Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
	(In thousands)
Cost of sales	$	2,055	$	1,879	$	6,354	$	6,778
Selling, general and administrative	7,490		5,276		22,042		19,492
Research and development	216		134		302		638
Total	$	9,761	$	7,289	$	28,698	$	26,908

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

	Number of Shares		Weighted- Average Exercise Price ($)	Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value of In-The-Money Options ($)
	(In thousands)				(In thousands)
Outstanding as of September 30, 2017	3,568		11.83	3.82	90,327
Granted	200		38.45
Exercised/Cancelled/Forfeited/Expired	(381	)	11.47
Outstanding as of June 30, 2018	3,387		13.44	3.64	58,397
Vested and expected to vest as of June 30, 2018	3,385		13.44	3.63	58,384
Exercisable as of June 30, 2018	3,201		12.16	3.34	58,170

Schedule of Restricted Stock Units Award Activity [Table Text Block]

	Number of Shares		Weighted- Average Grant Date Fair Value ($)	Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value ($)
	(In thousands)				(In thousands)
Outstanding as of September 30, 2017	3,359		27.56	1.51	124,800
Granted	1,098		33.52
Vested/Forfeited/Cancelled	(1,089	)	25.18
Outstanding as of June 30, 2018	3,368		30.27	1.46	101,728
Expected to vest as of June 30, 2018	2,553		29.60	1.46	77,110