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Stock Based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule Of Stock Based Compensation Expenses

Stock-based compensation is recorded in the consolidated statements of operations as follows (in thousands):

		Three months ended June 30,								Six months ended June 30,
		2021				2020				2021				2020
Cost of goods sold		$	1			$	—			$	2			$	—
Research and development			176				149				380				301
Sales and marketing			213				100				428				190
General and administrative			618				405				1,126				831
Total stock-based compensation expense		$	1,008			$	654			$	1,936			$	1,322

Summary of Outstanding Stock Option Activity

The following table summarizes the outstanding stock option activity during the period indicated (shares in thousands):

						Weighted average
		Number of  stock options				Exercise price				Remaining contractual term (in years)
Balance at December 31, 2020			1,760			$	10.07				7.6
Granted			456				23.20
Exercised			(218	)			11.14
Expired/Forfeited			(79	)			13.83
Balance at June 30, 2021			1,919				12.91				7.7
Vested and exercisable at June 30, 2021			1,022				9.37				6.7
Vested and expected to vest at June 30, 2021			1,919				12.91				7.7

Summary of Outstanding Restricted Stock Unit Activity

The following table summarizes the Company's restricted stock unit activity during the period indicated (shares in thousands):

		Restricted stock units				Weighted average grant date fair value
Balance at December 31, 2020			202			$	10.51
Grants			170				23.97
Vested and released			(61	)			10.43
Forfeited			(54	)			13.51
Balance at June 30, 2021			257				18.81

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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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-Publisher FASB
-Name Accounting Standards Codification
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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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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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