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Other Revenue (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 USD ($)
Other Revenue [Abstract] |
NEB Revenue | $ 11.2

X
- Definition NEB Revenue + References No definition available. + Details
Name: | icui_NEBRevenue
Namespace Prefix: | icui_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Other Revenue [Abstract] + References No definition available. + Details
Name: | icui_OtherRevenueAbstract
Namespace Prefix: | icui_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration