STOCK INCENTIVE PLANS AND STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Jan. 02, 2016

STOCK INCENTIVE PLANS AND STOCK-BASED COMPENSATION

Schedule of weighted average fair value and underlying assumptions for stock appreciation rights

	Year Ended
	January 2,			January 3,			December 28,
	2016			2015			2013
Fair value	$	7.60		$	7.85		$	6.61
Expected annual volatility	41.79		%	46.52		%	56.26		%
Risk-free interest rate	1.64		%	1.59		%	0.85		%
Expected term (years)	5.4			5.2			5.0
Annualized expected dividend yield	—			—			—

Schedule of total stock-based compensation expense included in the Company's consolidated statements of income and comprehensive income

	Year Ended
	January 2,		January 3,		December 28,
(In thousands)	2016		2015		2013
Cost of sales	$	1,415	$	1,098	$	938
Selling, general and administrative expense	10,242		9,525		7,142
Research and development expense	1,577		1,428		1,093
	$	13,234	$	12,051	$	9,173

Summary of stock option activity

					Weighted
			Weighted		Average	Aggregate
	Number of		Average		Remaining	Intrinsic
	Options		Exercise		Contractual	Value
	(In thousands)		Price		Life (Years)	(In thousands)
Outstanding at January 3, 2015	82		$	13.67
Exercised	(77	)	$	13.68
Expired (cancelled post-vesting)	(5	)	$	13.46
Outstanding at January 2, 2016	—		$	—	—	$	—

Summary of Company's stock appreciation rights activity

					Weighted
			Weighted		Average	Aggregate
	Number of		Average		Remaining	Intrinsic
	Shares		Base		Contractual	Value
	(In thousands)		Value		Life (Years)	(In thousands)
Outstanding at January 3, 2015	2,235		$	13.96
Granted	496		$	19.08
Exercised	(322	)	$	9.18
Forfeited (cancelled pre-vesting)	(71	)	$	17.01
Expired (cancelled post-vesting)	(14	)	$	16.04
Outstanding at January 2, 2016	2,324		$	15.61	4.1	$	3,968
Vested and expected to vest at January 2, 2016	2,229		$	15.48	4.1	$	3,963
Exercisable at January 2, 2016	1,315		$	13.89	3.0	$	3,582

Summary of Company's restricted stock unit activity

			Weighted
	Number of		Average
	Shares		Grant Date
	(In thousands)		Fair Value
Outstanding at January 3, 2015	1,196		$	16.54
Granted	533		$	19.06
Vested	(561	)	$	16.38
Forfeited	(81	)	$	17.33
Outstanding at January 2, 2016	1,087		$	17.81