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Stockholders' Equity - Equity Incentive Plans (Narrative) (Details)	9 Months Ended
	Sep. 30, 2023 plan shares	Dec. 31, 2022 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans | plan	4
Common stock, shares issued (in shares)	130,700,000	124,300,000
Common stock, shares outstanding (in shares)	130,700,000	124,300,000
Signal Sciences 2014 Equity Stock Options Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested stock options assumed (in shares)	251,754
2019 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares available for future issuance (in shares)	9,700,000	9,600,000

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