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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Stock-Based Compensation

Summary of compensation costs related to stock-based awards

The following table summarizes compensation costs related to our stock-based awards (in thousands, except per share data):

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Three Months Ended

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Nine Months Ended

​

​

​

September 30,

​

September 30,

​

​

2020

2019

2020

2019

Cost of revenue

​

$

28

​

$

31

​

$

83

​

$

92

​

Selling, general and administrative

​

496

​

433

​

1,480

​

1,296

​

Research and development

​

124

​

119

​

369

​

321

​

Total stock-based compensation

​

648

​

583

​

1,932

​

1,709

​

Tax effect on stock-based compensation

​

—

​

—

​

—

​

—

​

Net effect on net income (loss)

​

$

648

​

$

583

​

$

1,932

​

$

1,709

​

Summary of stock option activity

The following table summarizes the stock option transactions during the nine months ended September 30, 2020 (in thousands, except per share data):

​	​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	Weighted	​	​	​	​
​		​		​	​		average		​	​
​	​	​	​	Weighted-		​	Remaining	​	​	​
​	​	Number of	​	average		​	Contractual	​	Aggregate
​	​	Options	​	Exercise		​	Life	​	Intrinsic
Stock Options		Outstanding		Price			(in years)		Value
Balance as of January 1, 2020		2,953	​	$	4.00		5.95	​	$	3,040	​
Granted		—	​		—	​	—	​	​	—	​
Exercised		(460)	​		2.47	​	—	​	​	—	​
Canceled and expired		(162)	​		5.83	​	—	​	​	—	​
Balance as of September 30, 2020		2,331	​	$	4.18		5.89	​	$	5,061	​
Options vested as of September 30, 2020 and unvested options expected to vest, net of forfeitures		2,313	​	$	4.18		5.87	​	$	5,012	​
Options exercisable as of September 30, 2020		1,703	​	$	4.20		4.88	​	$	3,675	​

Summary of restricted stock awards activity

A summary of activity related to restricted stock awards for the nine months ended September 30, 2020 is presented below (in thousands, except per share data):

​	​	​	​	​	​	​
​		​		Weighted-Average
​	​	​	​	Grant Date
Stock Awards		Shares		Share Value
Non-vested as of January 1, 2020	​	939	​	$	5.02	​
Granted		55	​	$	5.21	​
Vested		(127)	​	$	6.00	​
Forfeited	​	(12)	​	$	5.69	​
Non-vested as of September 30, 2020		855	​	$	4.88	​

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Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit.

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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