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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 27, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Options Activity Under Plans and Agreement

A summary of stock option activity is as follows:

Options		Shares (Thousands)				Weighted Average Exercise Price				Aggregate Intrinsic Value (Thousands)				Weighted Average Remaining Term (Years)
Outstanding—December 31, 2017			3,309			$	10.71			$	7,699				4.90
Granted			203				11.27
Exercised			(993	)			8.30
Canceled			(369	)			13.63
Outstanding—December 30, 2018			2,150			$	11.49			$	378				5.13
Granted			—				—
Exercised			(22	)			7.93
Canceled			(354	)			12.45
Outstanding—December 29, 2019			1,774			$	11.34			$	—				4.33
Granted			—				—
Exercised			—				—
Canceled			(541	)			12.84
Outstanding—December 27, 2020			1,233			$	10.68			$	—				2.49
Exercisable—December 27, 2020			1,217			$	10.65			$	—				2.43

Schedule of Average Assumptions to Value Options

There were no stock option grants in 2020 and 2019. The following table reflects the average assumptions utilized in the Black-Scholes option-pricing model to value the options granted for 2018:

							2018
Risk-free interest rate								3.0	%
Expected life (years)								6.25
Expected dividend yield								—
Volatility								35.0	%
Weighted average grant date fair value							$	4.52

Summary of RSU Activity

A summary of RSU activity is as follows:

RSUs			Number of RSUs (Thousands)				Weighted Average Fair Value per Share
Non-vested as of December 31, 2017				267			$	11.79
Granted				131				12.12
Vested				(121	)			11.92
Canceled				(30	)			11.05
Non-vested as of December 30, 2018				247			$	11.99
Granted				402				6.47
Vested				(135	)			11.94
Canceled				(51	)			8.48
Non-vested as of December 29, 2019				463			$	7.59
Granted				1,604				2.79
Vested				(231	)			2.87
Canceled				(842	)			3.65
Non-vested as of December 27, 2020				994			$	3.35

Summary of PSU Activity

A summary of activity for PSUs with market vesting conditions is as follows:

PSUs			Number of PSUs (Thousands)				Weighted Average Fair Value per Share
Non-vested as of December 29, 2019				—			$	—
Granted				1,475				1.43
Vested				(501	)			4.45
Canceled				(472	)			1.50
Non-vested as of December 27, 2020				502			$	1.38

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

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

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Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, 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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