Stock-Based Compensation (Tables)

12 Months Ended

Dec. 30, 2016

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 2016, 2015 and 2014 were as follows (in thousands):

	2016		2015		2014
Stock options	$	2,499	$	2,708	$	2,523
Restricted stock and units	5,909		6,668		6,417
401(k) stock contribution	—		—		4,246
Total stock-based compensation expense	$	8,408	$	9,376	$	13,186
Cost of sales	$	332	$	795	$	3,530
Selling, general and administrative expenses	6,246		7,510		7,923
Research, development and engineering costs, net	355		982		1,440
Other operating expenses, net (Note 13)	1,475		89		293
Total stock-based compensation expense	$	8,408	$	9,376	$	13,186

Schedule of Weighted Average Grant Date Fair Values of Restricted Stock Awards, Restricted Stock Units, and Performance-Based Restricted Stock Units

The following table provides the weighted average grant date fair values of the Company's restricted stock awards, restricted stock units and performance-based restricted stock units during fiscal years 2016, 2015 and 2014:

	2016		2015		2014
Weighted average grant date fair values:
Restricted stock and restricted stock units	$	47.95	$	49.84	$	44.78
Performance-based restricted stock units	30.83		32.92		31.33

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 2016, 2015 and 2014 and the related weighted average assumptions used in the Black-Scholes model:

	2016			2015			2014
Fair value of options granted:	$	8.52		$	12.18		$	16.43
Assumptions:
Expected life of option from grant date (in years)	4.7			4.7			5.3
Risk-free interest rate	1.49		%	1.55		%	1.73		%
Expected volatility	27		%	26		%	39		%
Expected dividend yield	0		%	0		%	0		%

Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes stock option activity under all stock-based compensation plans during the fiscal year ended December 30, 2016:

	Number of Stock Options		Weighted Average Exercise Price			Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in millions)
Outstanding at January 1, 2016	1,678,900		$	28.32
Granted	316,678		42.82
Exercised	(130,459	)	21.61
Forfeited or expired	(125,147	)	44.76
Adjustment due to Spin-off	—		(2.02		)
Outstanding at December 30, 2016	1,739,972		$	28.26		5.7	$	11.0
Vested and expected to vest at December 30, 2016	1,723,137		$	28.07		5.7	$	11.0
Exercisable at December 30, 2016	1,484,481		$	26.26		5.7	$	10.3

Schedule Of Stock Option Exercise Information

The following table provides certain information relating to the exercise of stock options during fiscal years 2016, 2015 and 2014 (in thousands):

	2016		2015		2014
Intrinsic value	$	690	$	8,231	$	7,997
Cash received	2,821		6,583		8,278
Tax benefit realized	—		1,954		1,704

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

	Time-Vested Restricted Stock Units and Awards		Weighted Average Grant Date Fair Value
Nonvested at January 1, 2016	39,235		$	47.40
Granted	52,697		47.95
Vested	(40,304	)	49.64
Forfeited	(12,234	)	48.46
Nonvested at December 30, 2016	39,394		$	45.51

The following table summarizes performance-vested restricted stock and restricted stock unit activity under all stock-based compensation plans during the fiscal year ended December 30, 2016:

	Performance- Vested Restricted Stock Units and Awards		Weighted Average Grant Date Fair Value
Nonvested at January 1, 2016	577,825		$	25.11
Granted	163,651		30.83
Vested	(254,340	)	16.19
Forfeited	(130,550	)	31.16
Nonvested at December 30, 2016	356,586		$	31.87