Stock Based Compensation (Tables)

6 Months Ended

Jul. 02, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Activity in Stock Option Plan

The following table summarizes information regarding activity in our stock option plan during the six months ended July 2, 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		41,900		$	10.60
Exercised		(88,417	)	$	4.67
Canceled or forfeited		(49,995	)	$	8.58
Outstanding as of July 2, 2016		454,980		$	7.51	$	3,638

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						Six Months Ended
	July 2, 2016			July 4, 2015			July 2, 2016			July 4, 2015
Average risk free interest rate		1.10	%		1.51	%		1.16	%		1.27	%
Expected life (in years)	4.55 years			4.55 years			4.55 years			4.55 years
Dividend yield	—%			—%			—%			—%
Average volatility		46	%		51	%		47	%		51	%

Stock-Based Compensation Expense

The following table shows stock-based compensation expense included in the condensed consolidated statements of operations for the three and six months ended July 2, 2016 and July 4, 2015:

	Three Months Ended				Six Months Ended
	July 2, 2016		July 4, 2015		July 2, 2016		July 4, 2015
Cost of revenues	$	30	$	56	$	81	$	123
Research and development		19		53		51		132
Sales and marketing		41		45		81		104
General and administrative		488		75		587		203
	$	578	$	229	$	800	$	562

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 July 2, 2016 is summarized below:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate IntrinsicValue (thousands)
Options outstanding		454,980	$	7.51		4.59	$	3,638
Options vested and expected to vest		423,114	$	7.40		4.51	$	3,432
Options exercisable		226,651	$	6.42		3.73	$	2,059

Restricted Stock Units and Awards

Information regarding the restricted stock units (“RSUs”) activity for the six months ended July 2, 2016 is summarized below:

	Number of Shares
Outstanding as of January 2, 2016		147,589
Restricted stock units granted		213,867
Restricted stock units released		(30,789	)
Restricted stock units cancelled		(66,000	)
Outstanding as of July 2, 2016		264,667

Information regarding the restricted stock awards activity for the six months ended July 2, 2016 is summarized below:

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