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Restructuring Charges - Additional Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 USD ($) | Sep. 30, 2023 USD ($)
Restructuring and Related Activities [Abstract] |  |
Restructuring costs | $ 1,416 | $ 3,426
Accrued liabilities related to accrued severance cost | $ 1,483 | $ 1,483

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- Definition Accrued liabilities related to accrued severance cost. + References No definition available. + Details
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Namespace Prefix: | ingn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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