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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 28, 2018

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

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The components and classification of stock-based compensation expense for fiscal years 2018, 2017 and 2016 were as follows (in thousands):

	2018				2017				2016
Stock options	$	873			$	1,633			$	2,455
RSAs and RSUs (time-based)	6,024				4,952				1,764
PRSUs	3,159				6,867				3,887
Stock-based compensation expense - continuing operations	10,056				$	13,452			$	8,106
Discontinued operations	414				1,228				302
Total stock-based compensation expense	$	10,470			$	14,680			$	8,408
Cost of sales	$	849			$	748			$	208
SG&A	9,090				9,893				6,086
RD&E	112				642				337
OOE	5				2,169				1,475
Discontinued operations	414				1,228				302
Total stock-based compensation expense	$	10,470			$	14,680			$	8,408

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

The following table includes the weighted average grant date fair value of stock options granted to employees during fiscal years 2018, 2017 and 2016 and the related weighted average assumptions used in the Black-Scholes model:

	2018				2017				2016
Weighted average fair value of options granted	$	14.89			$	12.86			$	8.52
Assumptions:
Expected term (in years)	4.0				4.5				4.7
Risk-free interest rate	2.21		%		1.77		%		1.49		%
Expected volatility	39		%		37		%		27		%
Expected dividend yield	0		%		0		%		0		%

Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes stock option activity during the fiscal year ended December 28, 2018:

	Number of Stock Options			Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in millions)
Outstanding at December 29, 2017	931,353			$	30.89
Granted	28,447			45.13
Exercised	(413,317	)		30.02
Forfeited or expired	(23,700	)		41.28
Outstanding at December 28, 2018	522,783			$	31.88			5.8		$	23.1
Vested and expected to vest at December 28, 2018	522,783			$	31.88			5.8		$	23.1
Exercisable at December 28, 2018	488,468			$	31.37			5.6		$	21.8

Schedule Of Stock Option Exercise Information

The following table provides certain information relating to the exercise of stock options during fiscal years 2018, 2017 and 2016 (in thousands):

	2018				2017				2016
Intrinsic value	$	17,722			$	13,928			$	690
Cash received	12,409				19,324				2,821

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

The following table summarizes time-vested RSA and RSU activity during the fiscal year ended December 28, 2018:

	Time-Vested Restricted Stock Units and Awards			Weighted Average Grant Date Fair Value
Nonvested at December 29, 2017	163,431			$	35.96
Granted	167,514			52.14
Vested	(134,423	)		38.88
Forfeited	(54,286	)		42.44
Nonvested at December 28, 2018	142,236			$	49.78

The following table summarizes the maximum number of PRSUs which could be earned and related activity during the fiscal year ended December 28, 2018:

	Performance- Vested Restricted Stock Units and Awards			Weighted Average Grant Date Fair Value
Nonvested at December 29, 2017	469,889			$	32.37
Granted	159,669			45.37
Vested	(161,674	)		35.28
Forfeited	(180,750	)		35.24
Nonvested at December 28, 2018	287,134			$	36.15

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Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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