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v3.23.1

Long-Term Obligations Principal Payment (Details) | 3 Months Ended
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Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($)
Debt Disclosure [Abstract] |  |
Term A principal payment % First 2 Years | 0.0250 |
Term A Principal Payment % Year 3 and 4 | 0.0500 |
Term A Principal Payment % in Year 5 | 0.0750 |
Term Loan B Principal Payment % | 0.0025 |
Debt Instrument, Periodic Payment, Principal | $ 7,400,000 | $ 16,000,000

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- Definition Term A principal payment % First 2 Years + References No definition available. + Details
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Namespace Prefix: | icui_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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- Definition Term A Principal Payment % in Year 5 + References No definition available. + Details
Name: | icui_TermAPrincipalPaymentInYear5
Namespace Prefix: | icui_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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- Definition Term A Principal Payment % Year 3 and 4 + References No definition available. + Details
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Namespace Prefix: | icui_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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- Definition Term Loan B Principal Payment % + References No definition available. + Details
Name: | icui_TermLoanBPrincipalPayment
Namespace Prefix: | icui_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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

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- Definition Amount of the required periodic payments applied to principal. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration