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Convertible Debt - Narrative (Details) |  |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 17, 2021 USD ($) shares | Dec. 26, 2019 USD ($) | Mar. 01, 2019 USD ($) day $ / shares | Feb. 28, 2019 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Jan. 01, 2022 USD ($) | Dec. 26, 2019 KRW (₩)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Accumulated deficit |  |  |  |  | $ (1,487,847,784) | $ (1,209,855,522) |  |  |
Additional paid-in capital |  |  |  |  | (1,710,656,191) | (1,609,589,797) |  |  |
Interest expense |  |  |  |  | 1,253,952 | 1,936,447 | $ 8,702,450 |  |
6.50% Convertible Senior Notes Due 2024 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  | 78,500,000 |  |  |  |
Debt issuance costs, net |  |  |  |  | 155,815 |  |  |  |
Convertible senior notes |  |  |  |  | 16,614,840 | 14,959,647 |  |  |
Accounting Standards Update 2020-06 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Accumulated deficit |  |  |  |  |  |  |  | $ 1,800,000 |
Additional paid-in capital |  |  |  |  |  |  |  | 3,300,000 |
Convertible senior notes |  |  |  |  |  |  |  | $ 1,500,000 |
Convertible Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt issuance costs, net |  |  |  |  | $ 2,200,000 |  |  |  |
Convertible Debt | 6.50% Convertible Senior Notes Due 2024 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 78,500,000 |  |  |  |  |  |
Debt interest based on the fixed rate |  |  | 6.50% |  | 6.50% |  |  |  |
Proceeds from issuance of debt |  |  |  | $ 75,700,000 |  |  |  |  |
Debt instrument, convertible, conversion ratio |  |  |  | 0.1858045 |  |  |  |  |
Debt instrument, convertible, conversion price (in dollars per share) | $ / shares |  |  | $ 5.38 |  |  |  |  |  |
Debt instrument, convertible, threshold percentage of stock price trigger |  |  | 130.00% |  |  |  |  |  |
Debt instrument, convertible, threshold trading days | day |  |  | 20 |  |  |  |  |  |
Debt instrument, convertible, threshold consecutive trading days | day |  |  | 30 |  |  |  |  |  |
Debt instrument, redemption price, percentage |  |  | 100.00% |  |  |  |  |  |
Debt instrument, unamortized discount |  |  | $ 16,300,000 |  |  |  |  |  |
Debt instrument, interest rate, effective percentage |  |  |  |  | 13.10% |  |  |  |
Debt issuance costs, net |  |  |  |  | $ 592,000 |  |  |  |
Interest expense |  |  |  |  | 1,300,000 | 1,900,000 | 6,900,000 |  |
Interest expense, debt |  |  |  |  | 1,100,000 | $ 1,100,000 | $ 4,100,000 |  |
Convertible Debt | December 2019 Bonds |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  | $ 4,100,000 |  |  |  |  |  |  | ₩ 4,700,000,000
Debt interest based on the fixed rate |  | 1.00% |  |  |  |  |  |  | 1.00%
Proceeds from issuance of debt |  | $ 4,000,000 |  |  |  |  |  |  |
Debt instrument, interest rate, effective percentage |  |  |  |  |  | 6.20% |  |  |
Interest expense |  |  |  |  | 50,000 |  |  |  |
Interest expense, debt |  |  |  |  | $ 9,000 |  |  |  |
Debt conversion, converted instrument, shares issued (in shares) | shares | 1,009,450 |  |  |  |  |  |  |  |
Carrying value of december 2019 bonds | $ 4,400,000 |  |  |  |  |  |  |  |

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- Definition Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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Name: | us-gaap_DebtInstrumentAxis=ino_December2019ConvertibleBondsMember
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Data Type: | na
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