Income Taxes	9 Months Ended
Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company accounts for income taxes in accordance with Accounting Standards Codification (“ASC”) Topic 740, Income Taxes, which requires that deferred tax assets and liabilities are recognized using enacted tax rates for the effect of temporary differences between the book and tax bases of recorded assets and liabilities. ASC 740 also requires that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some or all of the deferred tax assets will not be realized. Based on its history of operating losses, the Company has offset its net deferred tax assets by a full valuation allowance. Any reversal of the corresponding valuation allowance will generally result in a tax benefit being recorded in the consolidated statement of operations in the respective period. For the three months ended September 30, 2014 and 2013, the Company recognized a provision for income taxes of $1.5 million and a benefit from income taxes of $0.3 million, respectively. The provision for income taxes in the 2014 period primarily reflects a $1.0 million valuation allowance adjustment as a result of a decrease in deferred tax liabilities related to net unrealized gains on marketable securities. The benefit from income taxes in the 2013 period primarily reflects a $0.7 million valuation allowance adjustment as a result of an increase in deferred tax liabilities related to net unrealized gains on marketable securities. For the nine months ended September 30, 2014 and 2013, the Company recognized a benefit from income taxes of $1.1 million and $2.3 million, respectively. The benefit from income taxes in each period primarily reflects valuation allowance adjustments of $2.2 million and $2.8 million in the 2014 period and 2013 period, respectively, as a result of an increase in deferred tax liabilities related to net unrealized gains on marketable securities.

Income Taxes

9 Months Ended

Sep. 30, 2014

The Company accounts for income taxes in accordance with Accounting Standards Codification (“ASC”) Topic 740, Income Taxes, which requires that deferred tax assets and liabilities are recognized using enacted tax rates for the effect of temporary differences between the book and tax bases of recorded assets and liabilities. ASC 740 also requires that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some or all of the deferred tax assets will not be realized. Based on its history of operating losses, the Company has offset its net deferred tax assets by a full valuation allowance. Any reversal of the corresponding valuation allowance will generally result in a tax benefit being recorded in the consolidated statement of operations in the respective period.

For the three months ended September 30, 2014 and 2013, the Company recognized a provision for income taxes of $1.5 million and a benefit from income taxes of $0.3 million, respectively. The provision for income taxes in the 2014 period primarily reflects a $1.0 million valuation allowance adjustment as a result of a decrease in deferred tax liabilities related to net unrealized gains on marketable securities. The benefit from income taxes in the 2013 period primarily reflects a $0.7 million valuation allowance adjustment as a result of an increase in deferred tax liabilities related to net unrealized gains on marketable securities.

For the nine months ended September 30, 2014 and 2013, the Company recognized a benefit from income taxes of $1.1 million and $2.3 million, respectively. The benefit from income taxes in each period primarily reflects valuation allowance adjustments of $2.2 million and $2.8 million in the 2014 period and 2013 period, respectively, as a result of an increase in deferred tax liabilities related to net unrealized gains on marketable securities.