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Stock Option Plan (Tables)

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Stock Option Activity

Activity under the Company's stock option plans is set forth below:

						Number of Options						Weighted- Average Exercise Price						Weighted- Average Remaining Contractual Term (Years)						Aggregate Intrinsic Value
Outstanding, December 31, 2019						1,375,542						$	8.33					9.16						$	23,654
Granted						901,531						$	16.14
Exercised						(47,354)						$	0.27
Forfeited						(244,749)						$	10.05
Expired						(9,720)						$	29.11
Outstanding, September 30, 2020						1,975,250						$	11.77					8.94						$	5,064
Vested and expected to vest, September 30, 2020						1,975,250						$	11.77					8.94						$	5,064
Options exercisable, September 30, 2020						394,739						$	6.51					8.25						$	2,430

Schedule of Fair Value Assumptions, Stock Options

The fair value of employee stock options was estimated using the following assumptions to determine the fair value of stock options granted:

						Three Months Ended September 30,												Nine Months Ended September 30,
						2020						2019						2020						2019
Expected volatility						52%						59%						47%-52%						59%
Risk-free interest rate						0.4%						2.0%						0.4%-1.7%						2.0%-2.6%
Dividend yield						—						—						—						—
Expected term (in years)						6.08						5.75-6.08						5.50-6.08						5.75-6.08

Schedule of Non-cash Stock-based Compensation Expense

Total non-cash stock-based compensation expense recorded related to options granted in the condensed statement of operations is as follows (in thousands):

						Three Months Ended September 30,												Nine Months Ended September 30,
						2020						2019						2020						2019
Cost of revenue						$	9					$	4					$	21					$	6
Selling, general and administrative						710						55						1,696						73
Research and development						80						3						160						6
Total						$	799					$	62					$	1,877					$	85

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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