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Share-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Summary of Share-Based Compensation Expense

The amount of share-based compensation expense recognized by the Company by location in its statements of operations for the three and nine months ended September 30, 2018 and 2017 is as follows (in thousands):

 

 

 

Three Months ended September 30,

 

 

Nine Months ended September 30,

 

 

 

2018

 

 

2017

 

 

2018

 

 

2017

 

Cost of revenues

 

$

6

 

 

$

5

 

 

$

15

 

 

$

12

 

Sales and marketing

 

 

709

 

 

 

38

 

 

 

828

 

 

 

94

 

General and administrative

 

 

273

 

 

 

40

 

 

 

415

 

 

 

148

 

Research and development

 

 

40

 

 

 

14

 

 

 

106

 

 

 

41

 

Total

 

$

1,028

 

 

$

97

 

 

$

1,364

 

 

$

295

 

 

Summary of Stock Option Activity

The following table summarizes the Company’s stock option activity for the nine months ended September 30, 2018:

 

 

 

Number of

Shares under

Option

(in thousands)

 

 

Weighted-

average

Exercise Price

per Option

 

 

Weighted-

average

Remaining

Contractual

Life (in years)

 

 

Aggregate

Intrinsic

Value

(in thousands)

 

Outstanding at December 31, 2017

 

 

2,444

 

 

$

2.39

 

 

 

 

 

 

 

 

 

Granted

 

 

535

 

 

$

7.19

 

 

 

 

 

 

 

 

 

Exercised

 

 

(29

)

 

$

1.58

 

 

 

 

 

 

 

 

 

Forfeited

 

 

(77

)

 

$

3.13

 

 

 

 

 

 

 

 

 

Outstanding at September 30, 2018

 

 

2,873

 

 

$

3.27

 

 

 

7.2

 

 

$

82,739

 

Exercisable at September 30, 2018

 

 

1,642

 

 

$

2.23

 

 

 

5.9

 

 

$

48,967

 

Vested and expected to vest at September 30, 2018

 

 

2,873

 

 

$

3.27

 

 

 

7.2

 

 

$

82,739

 

 

Summary of Weighted-average Inputs and Assumptions used to Estimate Grant-date Fair Value of Stock Options

For the nine months ended September 30, 2018, the grant-date fair value of stock options was estimated at the time of grant using the following weighted-average inputs and assumptions in the Black-Scholes option pricing model:

 

Estimated fair value of common stock

 

$

7.19

 

Exercise price

 

$

7.19

 

Expected term (in years)

 

 

6.0

 

Risk-free interest rate

 

 

2.7

%

Expected volatility

 

 

65.6

%

Dividend yield

 

 

0

%

 

Summary of Restricted Stock Award and Restricted Stock Unit Activity

The following table summarizes the Company’s restricted stock award and restricted stock unit activity for the nine months ended September 30, 2018:

 

 

 

Non-vested

Restricted

Stock Awards

(in thousands)

 

 

Weighted-

average

Grant-date

Fair  Value

 

 

Non-vested

Restricted

Stock Units

(in thousands)

 

 

Weighted-

average

Grant-date

Fair  Value

 

Non-vested at December 31, 2017

 

 

16

 

 

$

2.32

 

 

 

-

 

 

$

-

 

Granted

 

 

-

 

 

$

-

 

 

 

38

 

 

$

25.92

 

Vested

 

 

(9

)

 

$

2.32

 

 

 

-

 

 

$

-

 

Non-vested at September 30, 2018

 

 

7

 

 

$

2.32

 

 

 

38

 

 

$

25.92