Subsequent Events	12 Months Ended
Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On February 26, 2015, Omnicell International, Inc., a wholly-owned subsidiary of Omnicell, Inc. entered into an agreement with Apotheka Imedisa 2001 S.A., Holger Wallat, Dirk Rolf Beils and Peter Jansen (collectively, the “Selling Shareholders”) for the purchase of the entire registered share capital of Mach 4 Automatisierungstechnik GmbH (“Mach4”) (the “Share Purchase Agreement”). Mach4 is a provider of automated medication management systems to retail and hospital pharmacy customers primarily in Europe, with additional installations in China, the Middle East and Latin America. The contemplated total aggregate consideration is $18.0 million in cash, minus existing debt and subject to certain adjustments provided for in the Share Purchase Agreement. The closing of the acquisition is subject to certain closing conditions. On February 27, 2015, the Company received a notice from an Omnicell employee alleging, among other matters, the existence of a "side letter" arrangement with an Omnicell customer for certain discounts and Omnicell products that were to be provided at no cost, but which were not reflected in the final invoices paid by the customer. Following the receipt of this notice, the Company commenced an internal investigation into these allegations. This investigation was concluded on March 25, 2015. Based on the results of the investigation, the Company has determined that effective internal control over financial reporting was maintained in all material respects and that there are no changes required to be made to the Company’s Consolidated Financial Statements. On March 19, 2015, a putative class action lawsuit was filed against the Company and two executive officers in the U.S. District Court for the Northern District of California, captioned Nelson v. Omnicell, Inc., et al., Case No. 3:15-cv-01280-HSG. The complaint purports to assert claims on behalf of a class of purchasers of the Company’s stock between May 2, 2014 and March 2, 2015. It alleges that defendants violated Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 by purportedly making false and misleading statements regarding the existence of a “side letter” arrangement and the adequacy of internal controls that allegedly resulted in false and misleading financial statements. The Company and the individual defendants have not yet been served with the Complaint. The Company believes that the claims have no merit and will defend the lawsuit vigorously.

Subsequent Events

On February 26, 2015, Omnicell International, Inc., a wholly-owned subsidiary of Omnicell, Inc. entered into an agreement with Apotheka Imedisa 2001 S.A., Holger Wallat, Dirk Rolf Beils and Peter Jansen (collectively, the “Selling Shareholders”) for the purchase of the entire registered share capital of Mach 4 Automatisierungstechnik GmbH (“Mach4”) (the “Share Purchase Agreement”). Mach4 is a provider of automated medication management systems to retail and hospital pharmacy customers primarily in Europe, with additional installations in China, the Middle East and Latin America. The contemplated total aggregate consideration is $18.0 million in cash, minus existing debt and subject to certain adjustments provided for in the Share Purchase Agreement. The closing of the acquisition is subject to certain closing conditions.

On February 27, 2015, the Company received a notice from an Omnicell employee alleging, among other matters, the existence of a "side letter" arrangement with an Omnicell customer for certain discounts and Omnicell products that were to be provided at no cost, but which were not reflected in the final invoices paid by the customer. Following the receipt of this notice, the Company commenced an internal investigation into these allegations. This investigation was concluded on March 25, 2015. Based on the results of the investigation, the Company has determined that effective internal control over financial reporting was maintained in all material respects and that there are no changes required to be made to the Company’s Consolidated Financial Statements.

On March 19, 2015, a putative class action lawsuit was filed against the Company and two executive officers in the U.S. District Court for the Northern District of California, captioned Nelson v. Omnicell, Inc., et al., Case No. 3:15-cv-01280-HSG. The complaint purports to assert claims on behalf of a class of purchasers of the Company’s stock between May 2, 2014 and March 2, 2015. It alleges that defendants violated Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 by purportedly making false and misleading statements regarding the existence of a “side letter” arrangement and the adequacy of internal controls that allegedly resulted in false and misleading financial statements. The Company and the individual defendants have not yet been served with the Complaint. The Company believes that the claims have no merit and will defend the lawsuit vigorously.