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STOCK-BASED COMPENSATION PLANS - Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Stock-based compensation
Stock-based compensation	$ 4,255	$ 5,060
Product cost of revenue
Stock-based compensation
Stock-based compensation	99	27
Service cost of revenue
Stock-based compensation
Stock-based compensation	481	235
Research and development
Stock-based compensation
Stock-based compensation	1,206	627
Sales and marketing
Stock-based compensation
Stock-based compensation	1,371	1,874
General and administrative
Stock-based compensation
Stock-based compensation	$ 1,098	$ 2,297

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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