Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017:

	Number of Shares			Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (thousands)
Outstanding as of December 31, 2016		470,985		$	8.69
Granted		465,900		$	10.05
Exercised		(55,752	)	$	5.89
Canceled or forfeited		(52,607	)	$	10.50
Outstanding as of September 30, 2017		828,526		$	9.53	$	601

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
	September 30, 2017			October 1, 2016			September 30, 2017			October 1, 2016
Average risk free interest rate		1.80	%		1.03	%		1.79	%		1.10	%
Expected life (in years)	4.55 years			4.55 years			4.55 years			4.55 years
Dividend yield	—%			—%			—%			—%
Average volatility		42	%		46	%		42	%		46	%

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 September 30, 2017 and October 1, 2016:

	Three Months Ended				Nine Months Ended
	September 30, 2017		October 1, 2016		September 30, 2017		October 1, 2016
Cost of revenues	$	39	$	3	$	131	$	84
Research and development		104		39		215		90
Sales and marketing		59		38		238		119
General and administrative		319		390		773		977
	$	521	$	470	$	1,357	$	1,270

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

Information regarding stock options outstanding, vested, expected to vest, and exercisable as of September 30, 2017 is summarized below:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate IntrinsicValue (thousands)
Options outstanding		828,526	$	9.53		5.45	$	601
Options vested and expected to vest		743,785	$	9.45		5.30	$	597
Options exercisable		272,008	$	7.94		3.39	$	555

Restricted Stock Units and Awards

Information regarding the restricted stock units (“RSUs”) activity for the nine months ended September 30, 2017 is summarized below:

	Number of Shares
Outstanding as of December 31, 2016		335,805
Restricted stock units granted		112,391
Restricted stock units released		(67,197	)
Restricted stock units forfeited		(30,789	)
Outstanding as of September 30, 2017		350,210

Information regarding the RSUs granted with performance conditions activity for the nine months ended September 30, 2017 is summarized below:

	Number of Shares
Outstanding as of December 31, 2016		1,289
Restricted stock awards granted		4,301
Restricted stock awards released		(1,289	)
Outstanding as of September 30, 2017		4,301