v3.6.0.2
Document and Entity Information - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2016
Feb. 22, 2017
Jun. 30, 2016
Entity [Abstract]      
Entity Registrant Name OMNICELL, Inc    
Entity Central Index Key 0000926326    
Document Type 10-K    
Document Period End Date Dec. 31, 2016    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float, non-affiliates     $ 1.2
Entity Common Stock, Shares Outstanding   36,953,613  
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY