Organization and Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2016
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 Europe. "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 March 31, 2016 and December 31, 2015, the results of their operations, comprehensive income (loss) and cash flows for the three months ended March 31, 2016 and March 31, 2015. 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 the Company's annual report on Form 10-K for the year ended December 31, 2015 filed with the SEC on February 26, 2016. The Company's results of operations, comprehensive income (loss) and cash flows for the three months ended March 31, 2016 are not necessarily indicative of results that may be expected for the year ending December 31, 2016, 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 January 5, 2016, the Company completed the acquisition of all of the membership interests of Aesynt Holding Coöperatief U.A. ("Aesynt"). The significant accounting policies of Aesynt have been aligned to conform to those accounting policies of Omnicell, and the consolidated financial statements include the results of operations of Aesynt commencing as of the acquisition date. 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 the Company's 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. The Company's critical accounting policies are those that affect its 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 (investment in sales-type leases), capitalized software development costs, valuation of goodwill and purchased intangibles and long-lived assets, fair value of assets acquired and liabilities assumed in business combinations, and accounting for income taxes. Segment reporting change The Company's Chief Operating Decision Maker ("CODM") is its Chief Executive Officer. The CODM allocates resources and evaluates the performance of the Company's segments using information about its revenues, gross profit, and income from operations. Such evaluation excludes general corporate-level costs that are not specific to either of the reportable segments and are managed separately at the corporate level. Corporate-level costs include expenses related to executive management, finance and accounting, human resources, legal, training and development, and certain administrative expenses. The operating results of the recently acquired Aesynt business is included in the Company's Automation and Analytics reporting segment. Concentration of credit risk Financial instruments that may potentially subject the Company 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 the Company's accounts receivable are derived from sales to customers for commercial applications. The Company performs ongoing credit evaluations of its customers’ financial condition and limit the amount of credit extended when deemed necessary but generally require no collateral. The Company maintains reserves for potential credit losses. The Company's products are broadly distributed and there were no customers that accounted for more than 10% of its accounts receivable as of March 31, 2016 and December 31, 2015. The Company believes that it has no significant concentrations of credit risk as of March 31, 2016. Recently adopted authoritative guidance 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 is effective for fiscal years beginning after December 15, 2016. The adoption of this accounting standard update did not have a material impact on the Company's consolidated financial position or results of operations for the three months ended March 31, 2016. In September 2015, the FASB issued ASU No. 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments ("ASU 2015-16"). 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. An acquirer is 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. The adoption of this accounting standard update did not have any impact on the Company's consolidated financial position or results of operations for the three months ended March 31, 2016. Recently issued authoritative guidance In March 2016, the FASB issued ASU No. 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This ASU simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The provision of ASU No. 2016-09 are effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted for any entity in any interim or annual period. If an entity early adopts the amendments in an interim period, any adjustments are reflected as of the beginning of the fiscal year that includes that interim period. An entity that elects early adoption must adopt all of the amendments in the same period. The Company is currently in the process of evaluating the impact of the adoption of ASU 2016-09 on its consolidated financial statements. 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 Europe. "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 March 31, 2016 and December 31, 2015, the results of their operations, comprehensive income (loss) and cash flows for the three months ended March 31, 2016 and March 31, 2015. 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 the Company's annual report on Form 10-K for the year ended December 31, 2015 filed with the SEC on February 26, 2016. The Company's results of operations, comprehensive income (loss) and cash flows for the three months ended March 31, 2016 are not necessarily indicative of results that may be expected for the year ending December 31, 2016, 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 January 5, 2016, the Company completed the acquisition of all of the membership interests of Aesynt Holding Coöperatief U.A. ("Aesynt"). The significant accounting policies of Aesynt have been aligned to conform to those accounting policies of Omnicell, and the consolidated financial statements include the results of operations of Aesynt commencing as of the acquisition date.

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 the Company's 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. The Company's critical accounting policies are those that affect its 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 (investment in sales-type leases), capitalized software development costs, valuation of goodwill and purchased intangibles and long-lived assets, fair value of assets acquired and liabilities assumed in business combinations, and accounting for income taxes.

Segment reporting change

The Company's Chief Operating Decision Maker ("CODM") is its Chief Executive Officer. The CODM allocates resources and evaluates the performance of the Company's segments using information about its revenues, gross profit, and income from operations. Such evaluation excludes general corporate-level costs that are not specific to either of the reportable segments and are managed separately at the corporate level. Corporate-level costs include expenses related to executive management, finance and accounting, human resources, legal, training and development, and certain administrative expenses.

The operating results of the recently acquired Aesynt business is included in the Company's Automation and Analytics reporting segment.

Concentration of credit risk

Financial instruments that may potentially subject the Company 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 the Company's accounts receivable are derived from sales to customers for commercial applications. The Company performs ongoing credit evaluations of its customers’ financial condition and limit the amount of credit extended when deemed necessary but generally require no collateral. The Company maintains reserves for potential credit losses. The Company's products are broadly distributed and there were no customers that accounted for more than 10% of its accounts receivable as of March 31, 2016 and December 31, 2015. The Company believes that it has no significant concentrations of credit risk as of March 31, 2016.

Recently adopted authoritative guidance

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 is effective for fiscal years beginning after December 15, 2016. The adoption of this accounting standard update did not have a material impact on the Company's consolidated financial position or results of operations for the three months ended March 31, 2016.

In September 2015, the FASB issued ASU No. 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments ("ASU 2015-16"). 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. An acquirer is 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. The adoption of this accounting standard update did not have any impact on the Company's consolidated financial position or results of operations for the three months ended March 31, 2016.

Recently issued authoritative guidance

In March 2016, the FASB issued ASU No. 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This ASU simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The provision of ASU No. 2016-09 are effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted for any entity in any interim or annual period. If an entity early adopts the amendments in an interim period, any adjustments are reflected as of the beginning of the fiscal year that includes that interim period. An entity that elects early adoption must adopt all of the amendments in the same period. The Company is currently in the process of evaluating the impact of the adoption of ASU 2016-09 on its consolidated financial statements.

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