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Share Based Award Share Award data (Details) | Dec. 31, 2019 $ / shares
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Share award data [Abstract] |
Share Price | $ 187.12

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- Definition Share award data [Abstract] + References No definition available. + Details
Name: | icui_ShareawarddataAbstract
Namespace Prefix: | icui_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant