Income Taxes	9 Months Ended
Sep. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes In calculating the provision for income taxes, the Company uses an estimate of the annual effective tax rate based upon the facts and circumstances at each interim period. On a quarterly basis, the estimated annual effective tax rate is adjusted, as appropriate, based upon changes in facts and circumstances, if any, as compared to those forecasted at the beginning of the fiscal year and each interim period thereafter. The provision for income taxes reflected U.S. federal, state and local taxes at an estimated effective tax rate of 53.1% and 23.6% for the nine months ended September 30, 2015 and 2014, respectively. The year-over-year increase in the estimated effective tax rate was primarily due to changes in the valuation allowance related to the unrealized loss position on the Company’s marketable securities, as well as a tax benefit recognized during the period ended September 30, 2014 related to the settlement of an audit of the Company's 2011 federal corporate income tax return.

Income Taxes

9 Months Ended

Sep. 30, 2015

In calculating the provision for income taxes, the Company uses an estimate of the annual effective tax rate based upon the facts and circumstances at each interim period. On a quarterly basis, the estimated annual effective tax rate is adjusted, as appropriate, based upon changes in facts and circumstances, if any, as compared to those forecasted at the beginning of the fiscal year and each interim period thereafter.

The provision for income taxes reflected U.S. federal, state and local taxes at an estimated effective tax rate of 53.1% and 23.6% for the nine months ended September 30, 2015 and 2014, respectively. The year-over-year increase in the estimated effective tax rate was primarily due to changes in the valuation allowance related to the unrealized loss position on the Company’s marketable securities, as well as a tax benefit recognized during the period ended September 30, 2014 related to the settlement of an audit of the Company's 2011 federal corporate income tax return.