Share-based Compensation (Tables)

9 Months Ended

Sep. 29, 2017

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Share-Based Compensation Expense Recorded In Income from Continuing Operations in Statements of Operations

The table below summarizes share-based compensation expense recorded in income from continuing operations in the consolidated statements of operations (in thousands):

	ThreeMonths Ended				Nine Months Ended
	September 29,		September 30,		September 29,		September 30,
	2017		2016		2017		2016
Selling, general and administrative	$	1,336	$	914	$	3,911	$	3,112
Research and development and engineering		59		18		156		82
Cost of revenue		41		56		156		191
Total share-based compensation expense	$	1,436	$	988	$	4,223	$	3,385

Fair Value of TSR Performance-Based Restricted Stock Units Estimated Using Monte-Carol Valuation Model

The fair value of the TSR-PSUs at the date of grant was estimated using the Monte-Carlo valuation model with the following assumptions:

	Nine Months Ended September 29, 2017
Grant-date stock price	$	24.30
Expected volatility		28.6	%
Risk-free interest rate		1.44	%
Expected annual dividend yield		—
Weighted average fair value	$	33.31

2010 Incentive Award Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Restricted Stock Issued and Outstanding

The table below summarizes activities relating to RSUs and DSUs issued and outstanding under the Company’s Amended and Restated 2010 Incentive Plan during the nine months ended September 29, 2017:

	Shares (In thousands)			Weighted Average Grant Date Fair Value
Unvested at December 31, 2016		635		$	13.97
Granted		242		$	25.04
Vested		(206	)	$	14.09
Forfeited		(25	)	$	16.33
Unvested at September 29, 2017		646		$	17.99
Expected to vest as of September 29, 2017		616

Performance-Based Awards Issued and Outstanding

The table below summarizes the activities relating to the performance-based awards issued and outstanding under the Company’s Amended and Restated 2010 Incentive Plan during the nine months ended September 29, 2017:

	Shares (In thousands)		Weighted Average Grant Date Fair Value
Unvested at December 31, 2016		29	$	14.13
Granted		60	$	28.80
Vested		—	$	—
Forfeited		—	$	—
Unvested at September 29, 2017		89	$	24.00