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Stock-Based Compensation (Tables)

6 Months Ended

Jul. 01, 2017

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

The number of RSUs issued and outstanding under all of the Company’s equity plans are as follows (in thousands, except for grant date fair value amounts):

	Six Months Ended   July 1, 2017
	Units			Weighted Average Grant  Date Fair Value
RSUs outstanding, beginning of period	2,706			$	41.45
Granted	33			86.42
Canceled	(25	)		85.79
Expired	—			—
Vested	(6	)		43.09
RSUs outstanding, end of period	2,708			$	41.59

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

The number of PSUs outstanding under all of the Company’s equity plans are as follows (in thousands, except for grant date fair value amounts):

	Six Months Ended   July 1, 2017
	Units			Weighted Average Grant  Date Fair Value
PSUs outstanding, beginning of period	—			$	—
Granted	240			90.87
Canceled	—			—
Expired	—			—
Vested	—			—
PSUs outstanding, end of period	240			$	90.87

Number and Weighted Average Exercise Price of Options Issued and Outstanding under all Stock Option Plans

The number and weighted-average exercise price of options issued and outstanding under all of the Company’s equity plans are as follows (in thousands, except for exercise prices):

	Six Months Ended   July 1, 2017
	Shares			Average Exercise Price
Options outstanding, beginning of period	8,521			$	28.56
Granted	281			88.64
Canceled	(109	)		32.03
Exercised	(1,745	)		27.58
Options outstanding, end of period	6,948			$	31.19
Options exercisable, end of period	4,082			$	26.42

Range of Assumptions Used and Resulting Weighted-Average Fair Value of Options Granted at Date of Grant

The range of assumptions used and the resulting weighted-average fair value of options granted at the date of grant were as follows:

	Three Months Ended				Six Months Ended
	July 1, 2017		July 2, 2016		July 1, 2017		July 2, 2016
Risk-free interest rate	1.8% to 2.0%		1.1% to 1.5%		1.8% to 2.2%		1.1% to 1.9%
Expected term (in years)	5.5		5.7		5.5		5.7
Estimated volatility	29.8% to 30.3%		31.7% to 32.8%		29.7% to 30.3%		31.7% to 35.7%
Expected dividends	0%		0%		0%		0%
Weighted-average fair value of options granted	$28.58		$14.7		$27.82		$13.24

X

- Definition

Tabular disclosure of the changes in outstanding nonvested performance-based units.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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