Organization and Significant Accounting Policies (Tables)

6 Months Ended

Jun. 29, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Assets or Liabilities Measured at Fair Value

The following table summarizes, for assets or liabilities measured at fair value, the respective fair value and the classification by level of input within the fair value hierarchy (in thousands):

			Fair Value Measurement at
			Reporting Date Using
Description	June 29, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Other assets:
Interest rate swap	$	14	$	—	$	14	$	—
Forward contracts	$	457	$	—	$	457	$	—

			Fair Value Measurement at
			Reporting Date Using
Description	December 29, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Other assets:
Interest rate swap	$	30	$	—	$	30	$	—
Forward contracts	$	1,302	$	—	$	1,302	$	—

Summary of Restricted Stock Unit, Performance Stock Units and Restricted Stock Award Activity

The following table summarizes the Company’s RSU, PSU and RSA activity for the six months ended June 29, 2018:

	Shares			Aggregate FairValue (in thousands)
Unvested restricted stock units and restricted stock awards    at December 29, 2017		1,676,312		$	38,706
Granted		299,960
Vested		(629,192	)
Forfeited		(97,378	)
Unvested restricted stock units and restricted stock awards    at June 29, 2018		1,249,702		$	20,745
Vested and expected to vest restricted stock units and    restricted stock awards at June 29, 2018		1,069,087		$	17,747

Stock-Based Compensation Expense Included in Condensed Consolidated Statements of Operations

The following table shows the Company’s stock-based compensation expense included in the Condensed Consolidated Statements of Operations (in thousands):

	Three Months Ended						Six Months Ended
	June 29,			June 30,			June 29,			June 30,
	2018			2017			2018			2017
Cost of sales (1)	$	517		$	258		$	1,023		$	601
Research and development		10			47			71			100
Sales and marketing		193			97			396			221
General and administrative		1,636			978			3,430			1,840
		2,356			1,380			4,920			2,762
Income tax benefit		(312	)		(184	)		(540	)		(498	)
Stock-based compensation expense, net of tax	$	2,044		$	1,196		$	4,380		$	2,264

(1) Stock-based compensation expense capitalized in inventory for the three and six months ended June 29, 2018 and June 30, 2017 was not significant.