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Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Changes in Number of Shares Available for Grant

The following table summarizes changes in the number of shares available for grant under the Company’s equity incentive plans during the nine-month period ended September 30, 2020 (unaudited):

		Number of shares
Available for grant at December 31, 2019			426,022
Added to 2019 Share Incentive Plan			1,283,649
RSUs granted			(506,500	)
Options granted			(560,000	)
Shares withheld in settlement of taxes			10,341
Forfeitures			160,250
Available for grant at September 30, 2020			813,762

Schedule of Total Share Based Compensation Expense

The following table shows total share-based compensation expense for the three-month and nine-month periods ended September 30, 2019 and 2020 (unaudited and in thousands):

		Three Months Ended September 30								Nine Months Ended September 30,
		2019				2020				2019				2020
Cost of revenues		$	14			$	16			$	196			$	51
Research and development			199				396				5,062				1,186
Sales and marketing			374				251				3,981				726
General and administrative			241				291				7,667				742
Total share-based compensation expense		$	828			$	954			$	16,906			$	2,705

Summary of Stock Option Activity

The following is a summary of option activity for the Company’s share incentive plans for the nine-month period ended September 30, 2020 (unaudited):

		Options				Weighted average exercise price				Weighted Average remaining contractual term (years)				Aggregate intrinsic value
Outstanding at December 31, 2019			2,920,500			$	10.40				9.6			$	1,932,000
Options granted			560,000			$	15.65				—			$	—
Options exercised			(13,594	)		$	12.00				—			$	—
Options forfeited			(160,250	)		$	10.76				—			$	—
Outstanding at September 30, 2020			3,306,656			$	11.26				9.1			$	18,548,215
Options exercisable at September 30, 2020			696,461			$	11.97				8.7			$	3,416,065
Options vested and expected to vest at September 30, 2020			3,119,588			$	11.24				9.1			$	17,576,131

Schedule of Estimated Fair Value of Weighted Average Assumptions

The fair value of options granted are estimated on the date of grant using the Black-Scholes option pricing model.  The fair value of share options is being amortized on a straight-line basis over the requisite service period of the awards.  The fair value of share options is estimated using the following weighted-average assumptions (unaudited):

		For the nine months ended September 30,
		2019				2020
Expected dividend yield			—				—
Risk-free interest rate			1.82	%			0.39	%
Weighted-average expected volatility			40.8	%			50.0	%
Expected term (in years)			6.0				6.5
Weighted average grant-date fair value per    share of options granted		$	5.00			$	7.56

Summary of Restricted Shares Activity

The following is a summary of restricted shares activity for the Company’s share incentive plans for the nine-month period ended September 30, 2020 (unaudited):

		Units				Weighted average grant date fair value
RSU and RSA balance at December 31, 2019			257,119			$	12.00
RSUs and RSAs granted			506,500			$	4.56
RSUs and RSAs vested			(18,055	)		$	12.00
RSUs and RSAs forfeited			(5,078	)		$	12.00
RSU and RSA balance at September 30, 2020			740,486			$	6.91
RSUs and RSAs expected to vest at September 30, 2020			740,486			$	6.91

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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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