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STOCK-BASED COMPENSATION - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Share-Based Compensation Expense [Line Items] |  |
Total stock-based compensation expense | $ 7.5 | $ 10.1
Cost of testing revenue |  |
Share-Based Compensation Expense [Line Items] |  |
Total stock-based compensation expense | 0.3 | 0.3
Research and development expense |  |
Share-Based Compensation Expense [Line Items] |  |
Total stock-based compensation expense | 0.6 | 2.4
Selling, general, and administrative expense |  |
Share-Based Compensation Expense [Line Items] |  |
Total stock-based compensation expense | $ 6.6 | $ 7.4

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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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