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Stock Plans (Tables)

12 Months Ended

Dec. 29, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value of each of these option awards is estimated on the date of grant using the Black-Scholes option pricing model with the weighted average assumptions noted in the following table. Expected volatility is based on the historical volatility of the Company’s common stock. Since the Company’s option exercise history is limited, it has estimated the expected term of these options (other than the options with a seven-year term) to be the midpoint between the vesting period and the contractual term of each option. For options with a seven-year contractual term, the expected term is equal to 7 years. The risk-free interest rate is based on the U.S. Treasury yield curve in effect on the date of grant which most closely corresponds to the expected term of the Time-Vesting Options. The dividend yield is based on the Company’s historic average dividend yield.

			December 30,			December 31,
			2017			2016
Dividend yield			0.0%			0.0%
Volatility			51.3%-51.7%			49.6%-51.4%
Risk-free interest rate			2.17%			1.24%-2.26%
Expected term (years)			6.0-7.0				6.0

Summary of Option Activity Under Stock Plans, Inducement Option and Winfrey Option

A summary of all option activity under the Stock Plans and with respect to the Inducement Option and the previously disclosed Winfrey Option for the fiscal year ended December 29, 2018 is presented below:

										Weighted-
						Weighted-				Average
						Average				Remaining				Aggregate
						Exercise				Contractual				Intrinsic
		Shares				Price				Life (Yrs.)				Value
Outstanding at December 30, 2017			5,884			$	18.17
Granted			0			$	0.00
Exercised			(2,037	)		$	11.89
Cancelled			(58	)		$	9.21
Outstanding at December 29, 2018			3,789			$	21.69				6.2			$	84,871
Exercisable at December 29, 2018			2,790			$	13.27				6.5			$	81,774

Schedule of Share-based Compensation, Restricted Stock Units Award Activity

A summary of RSU activity under the Stock Plans for the fiscal year ended December 29, 2018 is presented below:

						Weighted-Average
						Grant-Date Fair
		Shares				Value
Outstanding at December 30, 2017			1,077			$	24.22
Granted			274			$	63.91
Vested			(379	)		$	22.38
Forfeited			(91	)		$	21.07
Outstanding at December 29, 2018			881			$	37.91

Schedule of Share-based Compensation, Performance Stock Units Award Activity

The fair value of PSUs is determined using the closing market price of the Company’s common stock on the date of grant. A summary of PSU activity under the 2014 Plan for the fiscal year ended December 29, 2018 is presented below:

						Weighted-Average
						Grant-Date Fair
		Shares				Value
Outstanding at December 30, 2017			330			$	19.42
Granted			81			$	80.18
Vested			0			$	0
Forfeited			(31	)		$	17.73
Outstanding at December 29, 2018			380			$	32.56

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

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-Publisher FASB
-Name Accounting Standards Codification
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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.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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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.

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