Legal Settlement Legal Settlement Charge (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Legal settlement disclosure [Abstract]
Legal settlement charge	$ 6.5icui_Legalsettlementcharge
Legal Settlement Charge For Legal Fees	0.6icui_LegalSettlementChargeForLegalFees
Total Legal Settlement Accrual	$ 7.1icui_Legalsettlementaccrual

Reimbursement of legal fees and expenses associated wtih an arbitration ruling.

No definition available.

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