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Liquidity and Going Concern (Details) - USD ($) | 1 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Oct. 17, 2022 | Sep. 28, 2022 | Feb. 28, 2022 | Apr. 30, 2021 | Sep. 30, 2020
Liquidity And Going Concern [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net working capital |  | $ 219,600,000 |  | $ 146,400,000 |  |  |  |  |  |  |
Cash and cash equivalents |  | 2,483,000 |  | 4,338,000 | $ 4,839,000 | $ 10,295,000 |  |  |  |  |
Operating loss |  | 30,893,000 | $ 25,421,000 | 35,838,000 | 35,258,000 | 138,695,000 |  |  |  |  |
Cash flow from operation |  | 20,533,000 | $ 22,707,000 | 28,664,000 | 31,461,000 | 60,421,000 |  |  |  |  |
Retained earnings accumulated deficit |  | 358,030,000 |  | 352,550,000 | 264,126,000 |  |  |  |  |  |
Debt Instrument, Annual Principal Payment |  |  |  | 45,900,000 | $ 69,800,000 | $ 2,300,000 |  |  |  |  |
Minimum net worth to consummate business combination |  |  |  |  |  |  | $ 5,000,001 |  |  |  |
Funding Commitment Letter [Member] |  |  |  |  |  |  |  |  |  |  |
Liquidity And Going Concern [Line Items] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  | 10,000,000 |  |  |  |
Aggregate Outstanding Amount |  |  |  |  |  |  | 310,000,000 |  |  |  |
Scilex Pharma Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Liquidity And Going Concern [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Annual Principal Payment |  | 41,400,000 |  |  |  |  |  |  |  |  |
Debt instrument, decrease, forgiveness |  | $ 28,000,000 |  |  |  |  |  |  |  |  |
Notes Payable, Related Parties |  |  |  |  |  |  |  | $ 34,000,000 |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Liquidity And Going Concern [Line Items] |  |  |  |  |  |  |  |  |  |  |
Minimum net worth to consummate business combination |  |  |  |  |  |  | 5,000,001 |  |  |  |
Subsequent Event [Member] | Funding Commitment Letter [Member] |  |  |  |  |  |  |  |  |  |  |
Liquidity And Going Concern [Line Items] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  | 10,000,000 |  |  |  |
Aggregate Outstanding Amount |  |  |  |  |  |  | $ 310,000,000 |  |  |  |
Scilex Pharma [Member] | Senior Secured Notes Due Two Thousand And Twenty Six [Member] |  |  |  |  |  |  |  |  |  |  |
Liquidity And Going Concern [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount | $ 224,000,000 |  |  |  |  |  |  |  |  |  |
Proceeds from senior secured notes | 140,000,000 |  |  |  |  |  |  |  |  |  |
Minimum unrestricted cash balance | $ 4,000,000 |  |  |  |  |  |  |  |  |  |
Debt instrument face amount of debt repurchased |  |  |  |  |  |  |  |  |  | $ 40,000,000 | $ 65,000,000
Restricted funds releasable for future repurchase of debt |  |  |  |  |  |  |  |  |  |  | $ 45,000,000
Scilex Pharma [Member] | Senior Secured Notes Due Two Thousand And Twenty Six [Member] | Cumulative Sales Related Contingency [Member] |  |  |  |  |  |  |  |  |  |  |
Liquidity And Going Concern [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount |  |  |  | $ 28,000,000 |  |  |  |  |  |  |
Scilex Pharma [Member] | Senior Secured Notes Due Two Thousand And Twenty Six [Member] | Letter Of Credit Drawn Down [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Liquidity And Going Concern [Line Items] |  |  |  |  |  |  |  |  |  |  |
Minimum unrestricted cash balance |  |  |  |  |  |  |  |  | $ 10,000,000 |  |
Debt instrument repurchase obligation |  |  |  |  |  |  |  |  | $ 20,000,000 |  |

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