Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Stock Grants Outstanding

The following table summarizes the stock grants outstanding under the 2010 ECP and the 2017 ECP for the nine months ended September 30, 2020:

	Options Outstanding	RSUs Outstanding	Options and RSUs Exercised	Available Shares	Total
2017 ECP	—	1,519,442	945,159	6,785,399	9,250,000
2010 ECP (*)	9,500	957,666	4,084,095	—	5,051,261
Total	9,500	2,477,108	5,029,254	6,785,399	14,301,261

(*) Expired April 2020

Schedule of Stock Option Award Activity

The following table summarizes the activity of stock option awards under the 2010 ECP for the nine months ended September 30, 2020:

	Shares Subject to Options Outstanding
	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Balance as of December 31, 2019	18,248	$	1.74	1.8	$	2,019
Stock options canceled	8,748	$	3.01	—	—
Balance as of September 30, 2020	9,500	$	0.56	1.83	$	2,019
Stock options exercisable as of September 30, 2020	9,500	$	0.56	1.83	$	2,019

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes the activities for our unvested RSUs for the nine months ended September 30, 2020:

	Unvested RSUs
	Number of Shares	Weighted Average Grant Date Fair Value
Unvested as of December 31, 2019	2,568,951	$	0.79
Granted	587,103	$	0.44
Vested	662,619	$	0.21
Forfeited	16,327	$	0.46
Unvested as of September 30, 2020	2,477,108	$	0.32