Income Taxes	6 Months Ended
Jun. 30, 2014
Income Tax Disclosure [Abstract]
Income Taxes	8. Income Taxes Our effective tax rate differs from the statutory rate primarily as a result of state taxes and nondeductible stock option expenses. The effective tax rate was 28.7% for the three months ended June 30, 2014 and (0.6)% for the six months ended June 30, 2014, compared to 6.2% for the three months ended June 30, 2013 and 18.9% for the six months ended June 30, 2013. During the three months ended June 30, 2014, we recorded an income tax benefit of $1.4 million and the income tax expense was immaterial during the same period in 2013, representing an increase of $1.4 million. The increase was primarily due to increased book losses during the period. During the six months ended June 30, 2014, we recorded an immaterial income tax benefit compared to an income tax benefit of $0.6 million during the same period in 2013, representing a decreased benefit of $0.6 million. The decreased benefit was primarily due to the reversal of deferred tax assets as a result of cancelled stock options in the 2014 periods as compared to the 2013 periods. 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 or six months ended June 30, 2014 or 2013, and we do not expect our uncertain tax position to change materially during the next 12 months. We file a U.S. federal 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.

Income Taxes

6 Months Ended

Jun. 30, 2014

8. Income Taxes

Our effective tax rate differs from the statutory rate primarily as a result of state taxes and nondeductible stock option expenses. The effective tax rate was 28.7% for the three months ended June 30, 2014 and (0.6)% for the six months ended June 30, 2014, compared to 6.2% for the three months ended June 30, 2013 and 18.9% for the six months ended June 30, 2013.

During the three months ended June 30, 2014, we recorded an income tax benefit of $1.4 million and the income tax expense was immaterial during the same period in 2013, representing an increase of $1.4 million. The increase was primarily due to increased book losses during the period. During the six months ended June 30, 2014, we recorded an immaterial income tax benefit compared to an income tax benefit of $0.6 million during the same period in 2013, representing a decreased benefit of $0.6 million. The decreased benefit was primarily due to the reversal of deferred tax assets as a result of cancelled stock options in the 2014 periods as compared to the 2013 periods.

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 or six months ended June 30, 2014 or 2013, and we do not expect our uncertain tax position to change materially during the next 12 months. We file a U.S. federal 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.