Organization and Summary of Significant Accounting Policies	9 Months Ended
Sep. 30, 2015
Accounting Policies [Abstract]
Organization and Summary of Significant Accounting Policies	Organization and Summary of Significant Accounting Policies Business Omnicell, Inc. was incorporated in California in 1992 under the name Omnicell Technologies, Inc. and reincorporated in Delaware in 2001 as Omnicell, Inc. Our major products are automated medication, supply control systems and medication adherence solutions which are sold in our principal market, which is the healthcare industry. Our market is primarily located in the United States and Canada. "Omnicell," "our," "us," "we," or the "Company" collectively refer to Omnicell, Inc. and its subsidiaries. Basis of presentation The accompanying unaudited Condensed Consolidated Financial Statements reflect, in the opinion of management, all adjustments, consisting of normal recurring adjustments and accruals, necessary to present fairly the financial position of the Company as of September 30, 2015 and December 31, 2014, the results of their operations, comprehensive income and cash flows for the three and nine months ended September 30, 2015 and September 30, 2014. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”). These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and accompanying Notes included in our annual report on Form 10-K for the year ended December 31, 2014 filed with the SEC on March 30, 2015. Our results of operations, comprehensive income and cash flows for the three and nine months ended September 30, 2015 are not necessarily indicative of results that may be expected for the year ending December 31, 2015, or for any future period. Principles of consolidation The Condensed Consolidated Financial Statements include the accounts of the Company and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. On April 21, 2015, we completed the acquisition of Mach4 Automatisierungstechnik GmbH (“Mach4”), a privately held German limited liability company with registered office in Bochum, Germany. On April 30, 2015, we acquired the remaining 85% of the issued and outstanding ordinary shares of Avantec Healthcare Limited (“Avantec”) not already held by Omnicell. The consolidated financial statements include the results of operations of Mach4 and Avantec commencing as of their respective acquisition dates. Use of estimates The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in our Condensed Consolidated Financial Statements and accompanying Notes. Management bases its estimates on historical experience and various other assumptions believed to be reasonable. Although these estimates are based on management's best knowledge of current events and actions that may impact the Company in the future, actual results may be different from the estimates. Our critical accounting policies are those that affect our financial statements materially and involve difficult, subjective or complex judgments by management. Those policies are revenue recognition, share-based compensation, inventory valuation, accounts receivable and notes receivable (net investment in sales-type leases), valuation of goodwill, purchased intangibles and long-lived assets, and accounting for income taxes. Segment reporting change As previously disclosed, since the first quarter of 2015, we modified the segment presentation to reflect the changes in how our Chief Operating Decision Maker (“CODM”) reviews the segments and the overall business. See Note 14, Segment Information, for additional information on our segment reporting change. Our CODM is our Chief Executive Officer. With the increase in completed acquisitions in the last two years, our CODM changed how the financial information was reviewed to exclude general corporate-level costs that are not specific to either of the reporting segments when evaluating the operating results of each segment. Corporate-level costs include expenses related to executive management, finance and accounting, human resources, legal, training and development, and certain administrative expenses. The historical information presented has been retrospectively adjusted to reflect the modified segment reporting. Our CODM allocates resources and evaluates the performance of our segments using information about its revenues, gross profit and income from operations, excluding certain costs which are managed separately at the corporate level. We enhanced our segment reporting structure to match our operating structure based on how our CODM views the business and allocates resources, beginning in the first quarter of 2015. Concentration of credit risk Financial instruments that may potentially subject us to concentrations of credit risk consist principally of cash equivalents and accounts receivable. Cash equivalents are maintained with several financial institutions and may exceed the amount of insurance provided on such balances. The majority of our accounts receivable are derived from sales to customers for commercial applications. We perform ongoing credit evaluations of our customers’ financial condition and limit the amount of credit extended when deemed necessary but generally require no collateral. We maintain reserves for potential credit losses. Our products are broadly distributed and there were no customers that accounted for more than 10% of our accounts receivable as of September 30, 2015 and December 31, 2014. We believe that we have no significant concentrations of credit risk as of September 30, 2015. Significant accounting policies There have been no material changes in our significant accounting policies for the three and nine months ended September 30, 2015, as compared to the significant accounting policies described in our annual report on Form 10-K for the year ended December 31, 2014. Recently issued authoritative guidance In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers. Under the new guidance, an entity is required to recognize an amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The original effective date for the ASU would have required the Company to adopt the standard beginning in its first quarter of fiscal year 2017. In July 2015, the FASB voted to amend ASU No. 2014-09 by approving a one-year deferral of the effective date as well as providing the option to early adopt the standard on the original effective date. Accordingly, we may adopt the standard in its first quarter of fiscal year 2018. The new revenue guidance may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of adoption. We are currently evaluating the impact of the adoption of this accounting standard update on our consolidated financial position or results of operations. In July 2015, the FASB issued ASU No. 2015-11, Simplifying the Measurement of Inventory. The new guidance changes the measurement principle for inventory from the lower of cost or market to lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. It applies to entities that measure inventory using a method other than last-in, first-out (LIFO) and the retail inventory method (RIM). The new guidance will be effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years and should be applied prospectively. Early adoption is permitted as of the beginning of an interim or annual reporting period. We are currently evaluating the impact of the adoption of this accounting standard update on our consolidated financial position or results of operations. In September 2015, the FASB issued ASU No. 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments. This ASU requires adjustments to provisional amounts that are identified during the measurement period of a business combination to be recognized in the reporting period in which the adjustment amounts are determined. Acquirers are no longer required to revise comparative information for prior periods as if the accounting for the business combination had been completed as of the acquisition date. The provisions of ASU 2015-16 are effective for reporting periods beginning after December 15, 2015. We are currently evaluating the impact of the adoption of this accounting standard update on our consolidated financial position or results of operations. There was no other recently issued authoritative guidance that has a material impact on our Condensed Consolidated Financial Statements through the reporting date.

Organization and Summary of Significant Accounting Policies

Business

Omnicell, Inc. was incorporated in California in 1992 under the name Omnicell Technologies, Inc. and reincorporated in Delaware in 2001 as Omnicell, Inc. Our major products are automated medication, supply control systems and medication adherence solutions which are sold in our principal market, which is the healthcare industry. Our market is primarily located in the United States and Canada. "Omnicell," "our," "us," "we," or the "Company" collectively refer to Omnicell, Inc. and its subsidiaries.

Basis of presentation

The accompanying unaudited Condensed Consolidated Financial Statements reflect, in the opinion of management, all adjustments, consisting of normal recurring adjustments and accruals, necessary to present fairly the financial position of the Company as of September 30, 2015 and December 31, 2014, the results of their operations, comprehensive income and cash flows for the three and nine months ended September 30, 2015 and September 30, 2014. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”). These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and accompanying Notes included in our annual report on Form 10-K for the year ended December 31, 2014 filed with the SEC on March 30, 2015. Our results of operations, comprehensive income and cash flows for the three and nine months ended September 30, 2015 are not necessarily indicative of results that may be expected for the year ending December 31, 2015, or for any future period.

Principles of consolidation

The Condensed Consolidated Financial Statements include the accounts of the Company and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.

On April 21, 2015, we completed the acquisition of Mach4 Automatisierungstechnik GmbH (“Mach4”), a privately held German limited liability company with registered office in Bochum, Germany. On April 30, 2015, we acquired the remaining 85% of the issued and outstanding ordinary shares of Avantec Healthcare Limited (“Avantec”) not already held by Omnicell. The consolidated financial statements include the results of operations of Mach4 and Avantec commencing as of their respective acquisition dates.

Use of estimates

The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in our Condensed Consolidated Financial Statements and accompanying Notes. Management bases its estimates on historical experience and various other assumptions believed to be reasonable. Although these estimates are based on management's best knowledge of current events and actions that may impact the Company in the future, actual results may be different from the estimates. Our critical accounting policies are those that affect our financial statements materially and involve difficult, subjective or complex judgments by management. Those policies are revenue recognition, share-based compensation, inventory valuation, accounts receivable and notes receivable (net investment in sales-type leases), valuation of goodwill, purchased intangibles and long-lived assets, and accounting for income taxes.

Segment reporting change

As previously disclosed, since the first quarter of 2015, we modified the segment presentation to reflect the changes in how our Chief Operating Decision Maker (“CODM”) reviews the segments and the overall business. See Note 14, Segment Information, for additional information on our segment reporting change.

Our CODM is our Chief Executive Officer. With the increase in completed acquisitions in the last two years, our CODM changed how the financial information was reviewed to exclude general corporate-level costs that are not specific to either of the reporting segments when evaluating the operating results of each segment. Corporate-level costs include expenses related to executive management, finance and accounting, human resources, legal, training and development, and certain administrative expenses.

The historical information presented has been retrospectively adjusted to reflect the modified segment reporting. Our CODM allocates resources and evaluates the performance of our segments using information about its revenues, gross profit and income from operations, excluding certain costs which are managed separately at the corporate level. We enhanced our segment reporting structure to match our operating structure based on how our CODM views the business and allocates resources, beginning in the first quarter of 2015.

Concentration of credit risk

Financial instruments that may potentially subject us to concentrations of credit risk consist principally of cash equivalents and accounts receivable. Cash equivalents are maintained with several financial institutions and may exceed the amount of insurance provided on such balances. The majority of our accounts receivable are derived from sales to customers for commercial applications. We perform ongoing credit evaluations of our customers’ financial condition and limit the amount of credit extended when deemed necessary but generally require no collateral. We maintain reserves for potential credit losses. Our products are broadly distributed and there were no customers that accounted for more than 10% of our accounts receivable as of September 30, 2015 and December 31, 2014. We believe that we have no significant concentrations of credit risk as of September 30, 2015.

Significant accounting policies

There have been no material changes in our significant accounting policies for the three and nine months ended September 30, 2015, as compared to the significant accounting policies described in our annual report on Form 10-K for the year ended December 31, 2014.

Recently issued authoritative guidance

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers. Under the new guidance, an entity is required to recognize an amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The original effective date for the ASU would have required the Company to adopt the standard beginning in its first quarter of fiscal year 2017. In July 2015, the FASB voted to amend ASU No. 2014-09 by approving a one-year deferral of the effective date as well as providing the option to early adopt the standard on the original effective date. Accordingly, we may adopt the standard in its first quarter of fiscal year 2018. The new revenue guidance may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of adoption. We are currently evaluating the impact of the adoption of this accounting standard update on our consolidated financial position or results of operations.

In July 2015, the FASB issued ASU No. 2015-11, Simplifying the Measurement of Inventory. The new guidance changes the measurement principle for inventory from the lower of cost or market to lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. It applies to entities that measure inventory using a method other than last-in, first-out (LIFO) and the retail inventory method (RIM). The new guidance will be effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years and should be applied prospectively. Early adoption is permitted as of the beginning of an interim or annual reporting period. We are currently evaluating the impact of the adoption of this accounting standard update on our consolidated financial position or results of operations.

In September 2015, the FASB issued ASU No. 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments. This ASU requires adjustments to provisional amounts that are identified during the measurement period of a business combination to be recognized in the reporting period in which the adjustment amounts are determined. Acquirers are no longer required to revise comparative information for prior periods as if the accounting for the business combination had been completed as of the acquisition date. The provisions of ASU 2015-16 are effective for reporting periods beginning after December 15, 2015. We are currently evaluating the impact of the adoption of this accounting standard update on our consolidated financial position or results of operations.

There was no other recently issued authoritative guidance that has a material impact on our Condensed Consolidated Financial Statements through the reporting date.