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Organization and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) shares in Millions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Cash and investments in marketable securities | $ 456,827,000 | $ 456,827,000 |  | $ 504,977,000
Accounts receivable, credit loss expense (reversal) |  | $ 0 | $ 0 |
Stock Options, RSUs And PSUs |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Potentially dilutive securities (in shares) |  | 22.8 | 22.3 |
Employee Severance | 2023 Restructuring Plan |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Workforce termination, percentage | 60.00% |  |  |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(5)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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