Document and Entity Information
6 Months Ended
Jun. 30, 2014
Aug. 01, 2014
Document and Entity Information [Abstract]    
Entity Registrant Name OMNICELL, Inc  
Entity Central Index Key 0000926326  
Document Type 10-Q  
Document Period End Date Jun. 30, 2014  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   35,872,538
Document Fiscal Year Focus 2014  
Document Fiscal Period Focus Q2