Income Taxes	9 Months Ended
Sep. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We provide for income taxes for each interim period based on the estimated annual effective tax rate for the year, adjusting for discrete items in the quarter in which they arise. The annual effective tax rate before discrete items was 39.3% and 40.5% for the nine months ended September 30, 2015 and September 30, 2014, respectively. The nine months ended September 30, 2015 and 2014 annual effective tax rate differed from the statutory rate of 35.0% primarily due to the unfavorable impact of state income taxes, non-deductible equity charges, and other non-deductible expenditures, which were partially offset by the domestic production activities deduction. We recorded a gain of $3.4 million attributable to the increase in the fair value of Omnicell's 15% minority interest in Avantec which was revalued in conjunction with our purchase of the remaining 85% of Avantec shares. This gain was treated as a discrete item and excluded from profit-before-tax in calculating the annual effective tax rate for the nine months ended September 30, 2015. The federal research and development credit law, which was extended through December 31, 2014, retroactively has not been extended to the end of 2015. As a result the annual effect tax rate for the nine months ended September 30, 2015 and 2014 did not consider the effect of the federal research and development tax credit. As of September 30, 2015 and December 31, 2014, the Company had gross unrecognized tax benefits of $7.1 million and $5.9 million, respectively. It is the Company’s policy to classify accrued interest and penalties as part of the unrecognized tax benefits, but to record interest and penalties in operating expense. As of September 30, 2015 and December 31, 2014, the amount of accrued interest and penalties was immaterial. As of September 30, 2015, the calendar years 2011 and thereafter are open and are subject to potential examination in one or more jurisdictions. However, because all of the net operating loss and research credit carryforwards that may be used in future years are subject to adjustment, if and when utilized, our federal and California tax years remain open from 1996 and 1992, respectively. We have been contacted for audit by the Internal Revenue Service for tax years 2011, 2012 and 2013. Although we believe we have adequately provided for uncertain tax positions, the provisions on these positions may change as revised estimates are made or the underlying matters are settled or otherwise resolved. It is not possible at this time to reasonably estimate changes in the unrecognized tax benefits within the next twelve months.

Income Taxes

We provide for income taxes for each interim period based on the estimated annual effective tax rate for the year, adjusting for discrete items in the quarter in which they arise. The annual effective tax rate before discrete items was 39.3% and 40.5% for the nine months ended September 30, 2015 and September 30, 2014, respectively. The nine months ended September 30, 2015 and 2014 annual effective tax rate differed from the statutory rate of 35.0% primarily due to the unfavorable impact of state income taxes, non-deductible equity charges, and other non-deductible expenditures, which were partially offset by the domestic production activities deduction.

We recorded a gain of $3.4 million attributable to the increase in the fair value of Omnicell's 15% minority interest in Avantec which was revalued in conjunction with our purchase of the remaining 85% of Avantec shares. This gain was treated as a discrete item and excluded from profit-before-tax in calculating the annual effective tax rate for the nine months ended September 30, 2015.

The federal research and development credit law, which was extended through December 31, 2014, retroactively has not been extended to the end of 2015. As a result the annual effect tax rate for the nine months ended September 30, 2015 and 2014 did not consider the effect of the federal research and development tax credit.

As of September 30, 2015 and December 31, 2014, the Company had gross unrecognized tax benefits of $7.1 million and $5.9 million, respectively. It is the Company’s policy to classify accrued interest and penalties as part of the unrecognized tax benefits, but to record interest and penalties in operating expense. As of September 30, 2015 and December 31, 2014, the amount of accrued interest and penalties was immaterial.

As of September 30, 2015, the calendar years 2011 and thereafter are open and are subject to potential examination in one or more jurisdictions. However, because all of the net operating loss and research credit carryforwards that may be used in future years are subject to adjustment, if and when utilized, our federal and California tax years remain open from 1996 and 1992, respectively. We have been contacted for audit by the Internal Revenue Service for tax years 2011, 2012 and 2013.

Although we believe we have adequately provided for uncertain tax positions, the provisions on these positions may change as revised estimates are made or the underlying matters are settled or otherwise resolved. It is not possible at this time to reasonably estimate changes in the unrecognized tax benefits within the next twelve months.