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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2021

Stock-Based Compensation Expense

Stock-based compensation expense was as follows (in thousands):

		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2021				2020				2021				2020
Cost of revenues		$	259			$	296			$	739			$	692
Selling, general and administrative			1,033				846				2,665				2,313
Research and development			575				498				1,601				1,281
Total stock-based compensation		$	1,867			$	1,640			$	5,005			$	4,286

Summary of Compensation Expense by Type of Award

Compensation expense by type of award was as follows (in thousands):

		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2021				2020				2021				2020
Stock options		$	1,661			$	1,420			$	4,328			$	3,663
ESPP			206				220				677				623
Total stock-based compensation		$	1,867			$	1,640			$	5,005			$	4,286

X

- Definition

Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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X

- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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