Income Taxes	9 Months Ended
Sep. 30, 2015
Income Taxes [Abstract]
Income Taxes	7. Income Taxes Our effective tax rate differs from the statutory rate primarily as a result of state taxes, non-deductible stock option expenses and international operations. The effective tax rate was 21.7% and (64.6)% for the three months ended September 30, 2015 and 2014, and was 26.6% and 33.2% for the nine months ended September 30, 2015 and 2014. We recorded an income tax benefit of $0.9 million during the three months ended September 30, 2015, compared to an income tax benefit of $1.6 million during the same period in 2014. The decreased benefit was primarily due to an increase in non-deductible stock warrant amortization and an increase in our state effective tax rate. We recorded an income tax benefit of $2.6 million during the nine months ended September 30, 2015, compared to an income tax benefit of $1.6 million during the same period in 2014. The increased benefit was primarily due to a one-time tax expense in 2014 upon the reversal of deferred tax assets as a result of cancelled stock options. We currently have a net deferred tax liability, and it appears more likely than not that our deferred tax assets will be realized. However, if future results differ from current projections, a valuation allowance may be required to reduce the deferred tax assets. We will continue to assess the need for a valuation allowance in the future. We are subject to the accounting guidance for uncertain income tax positions. We believe that our income tax positions and deductions will be sustained on audit and do not anticipate any adjustments that will result in a material adverse effect on our financial condition, results of operations, or cash flow. Our policy for recording interest and penalties associated with audits and uncertain tax positions is to record such items as a component of income tax expense, and amounts recognized to date are insignificant. No uncertain income tax positions were recorded during the three and nine months ended September 30, 2015 or 2014, and we do not expect our uncertain tax position to change materially during the next 12 months. We file a U.S. federal tax return and many state tax returns as well as tax returns in multiple foreign jurisdictions. All tax years since our incorporation remain subject to examination by the Internal Revenue Service and various state authorities.

7. Income Taxes

Our effective tax rate differs from the statutory rate primarily as a result of state taxes, non-deductible stock option expenses and international operations. The effective tax rate was 21.7% and (64.6)% for the three months ended September 30, 2015 and 2014, and was 26.6% and 33.2% for the nine months ended September 30, 2015 and 2014.

We recorded an income tax benefit of $0.9 million during the three months ended September 30, 2015, compared to an income tax benefit of $1.6 million during the same period in 2014. The decreased benefit was primarily due to an increase in non-deductible stock warrant amortization and an increase in our state effective tax rate.

We recorded an income tax benefit of $2.6 million during the nine months ended September 30, 2015, compared to an income tax benefit of $1.6 million during the same period in 2014. The increased benefit was primarily due to a one-time tax expense in 2014 upon the reversal of deferred tax assets as a result of cancelled stock options.

We currently have a net deferred tax liability, and it appears more likely than not that our deferred tax assets will be realized. However, if future results differ from current projections, a valuation allowance may be required to reduce the deferred tax assets. We will continue to assess the need for a valuation allowance in the future.

We are subject to the accounting guidance for uncertain income tax positions. We believe that our income tax positions and deductions will be sustained on audit and do not anticipate any adjustments that will result in a material adverse effect on our financial condition, results of operations, or cash flow.

Our policy for recording interest and penalties associated with audits and uncertain tax positions is to record such items as a component of income tax expense, and amounts recognized to date are insignificant. No uncertain income tax positions were recorded during the three and nine months ended September 30, 2015 or 2014, and we do not expect our uncertain tax position to change materially during the next 12 months. We file a U.S. federal tax return and many state tax returns as well as tax returns in multiple foreign jurisdictions. All tax years since our incorporation remain subject to examination by the Internal Revenue Service and various state authorities.