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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Weighted Average Assumptions Used in Estimating Fair Value of Stock Options

		As of December 31,
		2020				2019
Valuation assumptions:
Expected dividend yield			0	%			0	%
Expected volatility			44.1	%			40.8	%
Expected term (years)			5.8				6.0
Risk-free interest rate			1.5	%			2.1	%

 

Schedule Of Stock Based Compensation Expenses

The stock-based compensation is reflected in the statements of operations as follows (in thousands):

		For the year ended December 31,
		2020				2019
Cost of goods sold		$	2			$	—
Research and development			548				474
Sales and marketing			390				174
General and administrative			1,624				1,556
Total			2,564				2,204

Summary of Outstanding Stock Option Activity

A summary of the Company’s stock option activity is as follows (shares in thousands):

		Number of shares				Weighted average exercise price				Weighted average remaining contractual term (years)
Balance at December 31, 2019			1,600			$	9.98
Granted			402				10.05
Exercised			(120	)			8.49
Expired/Forfeited			(122	)			10.38
Balance at December 31, 2020			1,760				10.07				7.6
Vested and exercisable at December 31, 2020			984			$	9.40				6.7
Vested and expected to vest at December 31, 2020			1,760			$	10.07				7.6

Summary of Outstanding Restricted Stock Unit Activity

The following table summarizes the Company’s restricted stock unit activity (shares in thousands):

		Restricted stock units				Weighted average grant date fair value
Balance at December 31, 2019			80			$	11.43
Grants			151				10.17
Vested			(29	)			11.28
Balance at December 31, 2020			202				10.51

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