v3.7.0.1
Stockholders’ Equity (Tables)
 3 Months Ended
Apr. 01, 2017
Equity [Abstract]  
Summary of Stock-based Compensation in Accompanying Consolidated Statements of Operations
The following table summarizes stock-based compensation in our accompanying condensed consolidated statements of operations (in thousands):
 
Three Months Ended
 
April 1, 2017
 
March 26, 2016
 
 
 
 
Cost of revenue
$
92

 
$
75

Selling and marketing
246

 
185

Research and development
281

 
230

General and administrative
984

 
878

Income from discontinued operations
—

 
5

   Total stock-based compensation
$
1,603

 
$
1,373
Assumptions Used to Estimate Fair Value of Options Granted
The following table presents the assumptions used to estimate the fair value of options granted during the periods presented:
 
Three Months Ended
 
April 1,
2017
 
March 26,
2016
Risk-free interest rate
2.12%
 
1.63%
Expected term (years)
6.25
 
6.25
Volatility
33.32%
 
38.24%
Expected dividend yield
—
 
—
Summary of Stock Option and RSU Activity
A summary of stock option and RSU activity for the three months ended April 1, 2017 was as follows (in thousands for shares and intrinsic value):
 
 
 
 
 
 
 
 
 
Restricted Stock Units
 
Shares
 
Weighted-Average Remaining Contractual Term (Years)
 
Weighted-Average Exercise Price
 
Aggregate Intrinsic Value
 
Shares
 
Weighted-Average Grant Date Fair Value
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding as of December 31, 2016
4,312

 
6.45
 
$
6.64

 
$
13,042

 
1,780

 
$
7.08

Granted(1)
681

 
 
 
$
11.99

 
 
 
666

 
12.00

Settled (RSUs)
—

 
 
 
—

 
 
 
(154
)
 
7.07

Exercised
(241
)
 
 
 
$
5.52

 
 
 
—

 
—

Canceled and forfeited
(85
)
 
 
 
$
13.29

 
 
 
(473
)
 
6.79

Outstanding as of April 1, 2017
4,667

 
6.80
 
$
7.36

 
$
26,645

 
1,819

 
$
8.96

Vested and exercisable as of April 1, 2017
2,837

 
5.24
 
$
5.98

 
$
20,483

 
N/A
 
N/A
____________________________
(1) For RSUs, includes both time-based and performance-based restricted stock units
Schedule of Stock by Class
As of April 1, 2017, we had reserved the following shares of common stock for future issuance in connection with the following (in thousands):
 
April 1, 2017
Options issued and outstanding
4,667

Restricted stock units issued and outstanding
1,819

Common stock available for stock-based award grants under incentive award plans
3,004

Common stock available for conversion of Series A Redeemable Convertible Preferred Stock
4,596

Total
14,086