Income Taxes	9 Months Ended
Sep. 30, 2015
Income Taxes [Abstract]
Income Taxes	10. Income Taxes The Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. The Internal Revenue Service (the "IRS") has completed examinations of the Company's U.S. income tax returns or the statute of limitations has passed on returns for the years through 2010. The Company's 2011 and 2012 U.S. income tax returns are currently under examination by the IRS. The IRS has sought to disallow certain research credits on the Company's 2011 U.S. income tax return. The Company is actively appealing the IRS's initial findings. The Company believes the research credits taken are appropriate and intends to vigorously defend its position. The amount of adjustment, if any, and the timing of such adjustment is not reasonably estimable at this time. Under the provisions of the ASC Subtopic 740-10-25, Income Taxes - Recognition, the Company had an unrecognized tax benefit of $0.8 million as of September 30, 2015. The Company's effective tax rate was 33.4% and 30.5% for the three and nine months ended September 30, 2015, respectively, compared to 38.8% and 40.8% for the three and nine months ended September 30, 2014, respectively. The decrease in the effective rate is primarily due to an additional research and development tax credit recorded during the three and nine months ended September 30, 2015 related to the finalization of the Company's 2014 research and development tax assessment. As of September 30, 2015, the Company's net current deferred tax asset was $0.7 million and its net non-current deferred tax liability was $7.7 million. Generally, deferred tax assets are related to stock compensation, accruals and net operating losses of acquired companies. Deferred tax liabilities relate to goodwill, intangibles, fixed asset depreciation, and prepaid expenses. Net current deferred tax assets are recorded in "Other current assets" and net non-current deferred tax liabilities are recorded in "Other non-current liabilities" on the accompanying Condensed Consolidated Balance Sheet (Unaudited) as of September 30, 2015.

Income Taxes

9 Months Ended

Sep. 30, 2015

10. Income Taxes

The Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. The Internal Revenue Service (the "IRS") has completed examinations of the Company's U.S. income tax returns or the statute of limitations has passed on returns for the years through 2010. The Company's 2011 and 2012 U.S. income tax returns are currently under examination by the IRS. The IRS has sought to disallow certain research credits on the Company's 2011 U.S. income tax return. The Company is actively appealing the IRS's initial findings. The Company believes the research credits taken are appropriate and intends to vigorously defend its position. The amount of adjustment, if any, and the timing of such adjustment is not reasonably estimable at this time.

Under the provisions of the ASC Subtopic 740-10-25, Income Taxes - Recognition, the Company had an unrecognized tax benefit of $0.8 million as of September 30, 2015.

The Company's effective tax rate was 33.4% and 30.5% for the three and nine months ended September 30, 2015, respectively, compared to 38.8% and 40.8% for the three and nine months ended September 30, 2014, respectively. The decrease in the effective rate is primarily due to an additional research and development tax credit recorded during the three and nine months ended September 30, 2015 related to the finalization of the Company's 2014 research and development tax assessment. As of September 30, 2015, the Company's net current deferred tax asset was $0.7 million and its net non-current deferred tax liability was $7.7 million. Generally, deferred tax assets are related to stock compensation, accruals and net operating losses of acquired companies. Deferred tax liabilities relate to goodwill, intangibles, fixed asset depreciation, and prepaid expenses. Net current deferred tax assets are recorded in "Other current assets" and net non-current deferred tax liabilities are recorded in "Other non-current liabilities" on the accompanying Condensed Consolidated Balance Sheet (Unaudited) as of September 30, 2015.