Stock Based Compensation (Tables)

9 Months Ended

Oct. 01, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Activity under Incentive Plan

The following table summarizes information regarding activity under the Incentive Plan during the nine months ended October 1, 2016:

	Number of Shares			Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (thousands)
Outstanding as of January 2, 2016		551,492		$	6.92
Granted		79,777		$	13.30
Exercised		(117,576	)	$	5.53
Canceled or forfeited		(51,307	)	$	8.56
Outstanding as of October 1, 2016		462,386		$	8.19	$	2,980

Weighted Average Assumptions for Fair Value Estimate of Stock-Based Awards (Options)

The Company uses the Black-Scholes option-pricing model to estimate fair value of stock-based awards (options) with the following weighted average assumptions:

	Three Months Ended						Nine Months Ended
	October 1, 2016			October 3, 2015			October 1, 2016			October 3, 2015
Average risk free interest rate		1.03	%		1.30	%		1.10	%		1.27	%
Expected life (in years)	4.55 years			4.55 years			4.55 years			4.55 years
Dividend yield	—%			—%			—%			—%
Average volatility		46	%		47	%		46	%		50	%

Stock-Based Compensation Expense

The following table shows stock-based compensation expense included in the condensed consolidated statements of operations for the three and nine months ended October 1, 2016 and October 3, 2015:

	Three Months Ended				Nine Months Ended
	October 1, 2016		October 3, 2015		October 1, 2016		October 3, 2015
Cost of revenues	$	3	$	49	$	84	$	172
Research and development		39		21		90		153
Sales and marketing		38		42		119		146
General and administrative		390		51		977		254
	$	470	$	163	$	1,270	$	725

Summary of Stock Options Outstanding, Vested and Expected to Vest and Exercisable

Information regarding stock options outstanding, vested and expected to vest and exercisable as of October 1, 2016 is summarized below:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate IntrinsicValue (thousands)
Options outstanding		462,386	$	8.19		4.54	$	2,980
Options vested and expected to vest		428,659	$	7.98		4.44	$	2,844
Options exercisable		225,703	$	6.35		3.52	$	1,837

Restricted Stock Units and Awards

Information regarding the restricted stock units (“RSUs”) activity for the nine months ended October 1, 2016 is summarized below:

	Number of Shares
Outstanding as of January 2, 2016		147,589
Restricted stock units granted		285,005
Restricted stock units released		(30,789	)
Restricted stock units cancelled		(66,000	)
Outstanding as of October 1, 2016		335,805

Information regarding the restricted stock awards activity for the nine months ended October 1, 2016 is summarized below:

	Number of Shares
Outstanding as of January 2, 2016		2,513
Restricted stock awards granted		1,289
Restricted stock awards released		(2,513	)
Outstanding as of October 1, 2016		1,289