Subsequent Event (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Jun. 30, 2014
Subsequent Events [Abstract]
Estimated restructuring charges	$ 3.0

Subsequent event: estimated restructuring charges to recognized in future period.

No definition available.

Name:	icui_Estimatedrestructuringcharges
Namespace Prefix:	icui_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration