Contingencies	3 Months Ended
Mar. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal Proceedings On March 8, 2013, Bobbi Polanco (“Polanco”) filed a putative class action complaint in the United States District Court for the District of New Jersey against Omnicell and certain of our customers (Case No. 1:13-cv-01417-NLH-KLM) alleging breach of state security notification laws, violations of state consumer fraud laws, fraud, negligence and conspiracy relating to the theft of an Omnicell electronic device containing medication dispensing cabinet log files, including certain patient health information, and subsequent notification of this unauthorized disclosure of personal health information. Polanco is seeking an injunction against the defendants to prevent each of them from committing the acts complained of in the future and monetary damages, costs and expenses.On May 2, 2013, the United States District Court for the District of New Jersey entered an order to show cause which provided, in relevant part, that Polanco is required to show cause as to why the case should not be dismissed for lack of subject matter jurisdiction. Omnicell is currently evaluating a response to this complaint and intends to defend the matter vigorously. As required under ASC 450, "Contingencies," we accrue for contingencies when we believe that a loss is probable and that we can reasonably estimate the amount of any such loss. We have not recorded any accrual for contingent liabilities associated with the legal proceedings described above based on our belief that any potential loss, while reasonably possible, is not probable. Further, any possible range of loss in these matters cannot be reasonably estimated at this time. We believe that we have valid defenses with respect to legal proceedings pending against us. However, litigation is inherently unpredictable, and it is possible that cash flows or results of operations could be materially affected in any particular period by the unfavorable resolution of this contingency or because of the diversion of management's attention and the creation of significant expenses. Guarantees As permitted under Delaware law and our certificate of incorporation and bylaws, we have agreed to indemnify our directors and officers against certain losses that they may suffer by reason of the fact that such persons are, were or become our directors or officers. The term of the indemnification period is for the director’s or officer’s lifetime and there is no limit on the potential amount of future payments that we could be required to make under these indemnification agreements. We have purchased a directors’ and officers’ liability insurance policy that may enable us to recover a portion of any future payments that we may be required to make under these indemnification agreements. Assuming the applicability of coverage and the willingness of the insurer to assume coverage and subject to certain retention, loss limits and other policy provisions, we believe it is unlikely that we will be required to pay any material amounts pursuant to these indemnification obligations. However, no assurances can be given that the insurers will not attempt to dispute the validity, applicability or amount of coverage without expensive and time-consuming litigation against the insurers. Additionally, we undertake indemnification obligations in our ordinary course of business in connection with, among other things, the licensing of our products and the provision of our support services. In the ordinary course of our business, we have in the past and may in the future agree to indemnify another party, generally our business affiliates or customers, against certain losses suffered or incurred by the indemnified party in connection with various types of claims, which may include, without limitation, claims of intellectual property infringement, certain tax liabilities, our gross negligence or intentional acts in the performance of support services and violations of laws. The term of these indemnification obligations is generally perpetual. In general, we attempt to limit the maximum potential amount of future payments that we may be required to make under these indemnification obligations to the amounts paid to us by a customer, but in some cases the obligation may not be so limited. In addition, we have in the past and may in the future warrant to our customers that our products will conform to functional specifications for a limited period of time following the date of installation (generally not exceeding 30 days) or that our software media is free from material defects. Sales contracts for certain of our medication packaging systems often include limited warranties for up to six months, but the periodic activity and ending warranty balances we record have historically been immaterial. From time to time, we may also warrant that our professional services will be performed in a good and workmanlike manner or in a professional manner consistent with industry standards. We generally seek to disclaim most warranties, including any implied or statutory warranties such as warranties of merchantability, fitness for a particular purpose, title, quality and non-infringement, as well as any liability with respect to incidental, consequential, special, exemplary, punitive or similar damages. In some states, such disclaimers may not be enforceable. If necessary, we would provide for the estimated cost of product and service warranties based on specific warranty claims and claim history. We have not been subject to any significant claims for such losses and have not incurred any material costs in defending or settling claims related to these indemnification obligations. Accordingly, we believe it is unlikely that we will be required to pay any material amounts pursuant to these indemnification obligations or potential warranty claims and, therefore, no material liabilities have been recorded for such indemnification obligations as of March 31, 2013 or December 31, 2012.

Contingencies

Legal Proceedings

On March 8, 2013, Bobbi Polanco (“Polanco”) filed a putative class action complaint in the United States District Court for the District of New Jersey against Omnicell and certain of our customers (Case No. 1:13-cv-01417-NLH-KLM) alleging breach of state security notification laws, violations of state consumer fraud laws, fraud, negligence and conspiracy relating to the theft of an Omnicell electronic device containing medication dispensing cabinet log files, including certain patient health information, and subsequent notification of this unauthorized disclosure of personal health information. Polanco is seeking an injunction against the defendants to prevent each of them from committing the acts complained of in the future and monetary damages, costs and expenses.On May 2, 2013, the United States District Court for the District of New Jersey entered an order to show cause which provided, in relevant part, that Polanco is required to show cause as to why the case should not be dismissed for lack of subject matter jurisdiction. Omnicell is currently evaluating a response to this complaint and intends to defend the matter vigorously.

As required under ASC 450, "Contingencies," we accrue for contingencies when we believe that a loss is probable and that we can reasonably estimate the amount of any such loss. We have not recorded any accrual for contingent liabilities associated with the legal proceedings described above based on our belief that any potential loss, while reasonably possible, is not probable. Further, any possible range of loss in these matters cannot be reasonably estimated at this time. We believe that we have valid defenses with respect to legal proceedings pending against us. However, litigation is inherently unpredictable, and it is possible that cash flows or results of operations could be materially affected in any particular period by the unfavorable resolution of this contingency or because of the diversion of management's attention and the creation of significant expenses.

Guarantees

As permitted under Delaware law and our certificate of incorporation and bylaws, we have agreed to indemnify our directors and officers against certain losses that they may suffer by reason of the fact that such persons are, were or become our directors or officers. The term of the indemnification period is for the director’s or officer’s lifetime and there is no limit on the potential amount of future payments that we could be required to make under these indemnification agreements. We have purchased a directors’ and officers’ liability insurance policy that may enable us to recover a portion of any future payments that we may be required to make under these indemnification agreements. Assuming the applicability of coverage and the willingness of the insurer to assume coverage and subject to certain retention, loss limits and other policy provisions, we believe it is unlikely that we will be required to pay any material amounts pursuant to these indemnification obligations. However, no assurances can be given that the insurers will not attempt to dispute the validity, applicability or amount of coverage without expensive and time-consuming litigation against the insurers.

Additionally, we undertake indemnification obligations in our ordinary course of business in connection with, among other things, the licensing of our products and the provision of our support services. In the ordinary course of our business, we have in the past and may in the future agree to indemnify another party, generally our business affiliates or customers, against certain losses suffered or incurred by the indemnified party in connection with various types of claims, which may include, without limitation, claims of intellectual property infringement, certain tax liabilities, our gross negligence or intentional acts in the performance of support services and violations of laws. The term of these indemnification obligations is generally perpetual. In general, we attempt to limit the maximum potential amount of future payments that we may be required to make under these indemnification obligations to the amounts paid to us by a customer, but in some cases the obligation may not be so limited. In addition, we have in the past and may in the future warrant to our customers that our products will conform to functional specifications for a limited period of time following the date of installation (generally not exceeding 30 days) or that our software media is free from material defects. Sales contracts for certain of our medication packaging systems often include limited warranties for up to six months, but the periodic activity and ending warranty balances we record have historically been immaterial.

From time to time, we may also warrant that our professional services will be performed in a good and workmanlike manner or in a professional manner consistent with industry standards. We generally seek to disclaim most warranties, including any implied or statutory warranties such as warranties of merchantability, fitness for a particular purpose, title, quality and non-infringement, as well as any liability with respect to incidental, consequential, special, exemplary, punitive or similar damages. In some states, such disclaimers may not be enforceable. If necessary, we would provide for the estimated cost of product and service warranties based on specific warranty claims and claim history. We have not been subject to any significant claims for such losses and have not incurred any material costs in defending or settling claims related to these indemnification obligations. Accordingly, we believe it is unlikely that we will be required to pay any material amounts pursuant to these indemnification obligations or potential warranty claims and, therefore, no material liabilities have been recorded for such indemnification obligations as of March 31, 2013 or December 31, 2012.