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v3.22.0.1

Share Based Award ESPP Narrative (Details) | Dec. 31, 2021 shares
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Share-based Payment Arrangement [Abstract] |
ESPP Original Issuance | 750,000
ESPP Annual Issuance Increase Limit | 300,000
Shares available in employee stock purchase plan | 133,487

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- Definition ESPP Annual Issuance Increase Limit + References No definition available. + Details
Name: | icui_ESPPAnnualIssuanceIncreaseLimit
Namespace Prefix: | icui_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Definition ESPP Original Issuance + References No definition available. + Details
Name: | icui_ESPPOriginalIssuance
Namespace Prefix: | icui_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Definition Shares available in employee stock purchase plan + References No definition available. + Details
Name: | icui_SharesAvailableInEmployeeStockPurchasePlan
Namespace Prefix: | icui_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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