Note 10 Stock-Based Compensation

3 Months Ended

Dec. 31, 2016

Share-based Compensation [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

Stock-Based Compensation

Stock-based compensation expense was attributable to:

	Three Months Ended
	December 31, 2016		January 2, 2016
	(In thousands)
Stock options	$	550	$	1,240
Restricted stock units, including performance based awards	11,427		2,812
Total	$	11,977	$	4,052

Stock-based compensation expense was recognized as follows:

	Three Months Ended
	December 31, 2016		January 2, 2016
	(In thousands)
Cost of sales	$	2,864	$	1,405
Selling, general and administrative	8,840		2,566
Research and development	273		81
Total	$	11,977	$	4,052

As of December 31, 2016, an aggregate of 10.3 million shares were authorized for future issuance under the Company's stock plans, of which 8.4 million of such shares were issuable upon exercise of outstanding options and delivery of shares upon vesting of restricted stock units and 1.9 million shares of common stock were available for future grant.

Stock Options

Stock option activity was as follows:

	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 October 1, 2016	5,514		12.75	4.10	81,659
Granted	—		—
Exercised/Cancelled/Forfeited/Expired	(709	)	15.04
Outstanding as of December 31, 2016	4,805		12.41	4.03	113,109
Vested and expected to vest as of December 31, 2016	4,786		12.37	4.02	112,836
Exercisable as of December 31, 2016	4,542		11.86	3.82	109,411

The aggregate intrinsic value in the preceding table represents the total pre-tax intrinsic value of in-the-money options that would have been received by the option holders had all option holders exercised such options at the Company's closing stock price on the date indicated.

As of December 31, 2016, unrecognized compensation expense of $2.3 million is expected to be recognized over a weighted average period of 1.6 years.

Restricted Stock Units

Activity with respect to the Company's restricted stock units was as follows:

	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 October 1, 2016	3,998		19.57	1.35	110,183
Granted	941		32.56
Vested/Forfeited/Cancelled	(1,406	)	13.42
Outstanding as of December 31, 2016	3,533		23.35	1.81	127,011
Expected to vest as of December 31, 2016	2,756		24.51	1.83	99,093

As of December 31, 2016, unrecognized compensation expense of $48.1 million is expected to be recognized over a weighted average period of 1.9 years. Additionally, as of December 31, 2016, unrecognized compensation expense related to performance-based restricted stock units for which achievement of the performance criteria is not currently considered probable was $14.3 million.