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Share-Based Compensation - Summary of Options Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of options, Outstanding beginning balance | 29,676,253 |
Number of options, Granted | 5,601,640 |
Number of options, Exercised | (5,622,274) |
Number of options, Forfeited | (1,410,996) |
Number of options, Outstanding ending balance | 28,244,623 | 29,676,253
Number of options, Exercisable | 16,636,567 |
Weighted average exercise price per option, Outstanding beginning balance | $ 0.0157 |
Weighted average exercise price per option, Granted | 0.0002 |
Weighted average exercise price per option, Exercised | 0.0039 |
Weighted average exercise price per option, Forfeited | 0.0011 |
Weighted average exercise price per option, Outstanding ending balance | 0.0157 | $ 0.0157
Weighted average exercise price per option, Exercisable | $ 0.0265 |
Weighted average remaining contractual term options outstanding | 6 years 4 months 24 days | 6 years 8 months 8 days
Weighted average remaining contractual life, Exercisable | 4 years 9 months 10 days |
Aggregated intrinsic value, Outstanding beginning balance | $ 126,375 | $ 132,783
Aggregated intrinsic value, Exercisable | $ 74,260 |
Options classified as Equity Awards | 2018 Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of options, Outstanding beginning balance | 4,848,671 |
Number of options, Granted | 926,300 |
Number of options, Repurchased | (769,889) |
Number of options, Forfeited | (384,066) |
Number of options, Outstanding ending balance | 4,621,016 | 4,848,671
Number of options, Exercisable | 3,002,020 |
Weighted average exercise price per option, Outstanding beginning balance | $ 1.6232 |
Weighted average exercise price per option, Granted | $ 0.0001 |
Weighted average exercise price per option, Repurchased | 1.0237 |
Weighted average exercise price per option, Forfeited | $ 0.865 |
Weighted average exercise price per option, Outstanding ending balance | 1.4607 | $ 1.6232
Weighted average exercise price per option, Exercisable | $ 2.1096 |
Weighted average remaining contractual term options outstanding | 6 years 6 months 29 days | 6 years 9 months 3 days
Weighted average remaining contractual life, Exercisable | 5 years 2 months 12 days |
Aggregated intrinsic value, Outstanding beginning balance | $ 0 | $ 0
Aggregated intrinsic value, Exercisable | $ 0 |

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- Definition Share based compensation arrangements by share based payment award options repurchased in period weighted average exercise price. + References No definition available. + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(03) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + 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 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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