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Contingencies - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract] |
Standard product warranty, duration following installation | 30 days
Medication packaging system duration of limited warranties | 6 months

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- Definition Standard Product Warrant Description, Duration Following Installation + References No definition available. + Details
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- Definition Standard Product Warrant, Duration of Limited Warranty + References No definition available. + Details
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Namespace Prefix: | omcl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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