Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2015
Summary of Significant Accounting Policies
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Basis of Presentation The consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States, or GAAP, for interim financial information. Certain information and footnotes normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission, or the SEC. Unaudited Interim Financial Information The accompanying unaudited consolidated balance sheet as of March 31, 2015, consolidated statements of operations and comprehensive loss for the three months ended March 31, 2014 and 2015, and consolidated statements of cash flows for the three months ended March 31, 2014 and 2015 are unaudited. The interim unaudited consolidated financial statements have been prepared on the same basis as the annual audited financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary for the fair presentation of our financial position as of March 31, 2015 and the results of our operations, our comprehensive loss and our cash flows for the three months ended March 31, 2014 and 2015. The financial data and other information disclosed in these notes as of March 31, 2014 and 2015 and for the three months ended March 31, 2014 and 2015 are unaudited. The results for the three months ended March 31, 2015 are not necessarily indicative of results to be expected for the year ending December 31, 2015, any other interim periods, or any future year or period. Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from such estimates. Significant Accounting Policies Our significant accounting policies are disclosed in our annual report on Form 10-K for the year ended December 31, 2014 filed on February 26, 2015, or the Form 10-K. Since the date of those financial statements, there have been no changes to our significant accounting policies.

2. Summary of Significant Accounting Policies

Basis of Presentation

The consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States, or GAAP, for interim financial information. Certain information and footnotes normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission, or the SEC.

Unaudited Interim Financial Information

The accompanying unaudited consolidated balance sheet as of March 31, 2015, consolidated statements of operations and comprehensive loss for the three months ended March 31, 2014 and 2015, and consolidated statements of cash flows for the three months ended March 31, 2014 and 2015 are unaudited. The interim unaudited consolidated financial statements have been prepared on the same basis as the annual audited financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary for the fair presentation of our financial position as of March 31, 2015 and the results of our operations, our comprehensive loss and our cash flows for the three months ended March 31, 2014 and 2015. The financial data and other information disclosed in these notes as of March 31, 2014 and 2015 and for the three months ended March 31, 2014 and 2015 are unaudited. The results for the three months ended March 31, 2015 are not necessarily indicative of results to be expected for the year ending December 31, 2015, any other interim periods, or any future year or period.

Use of Estimates

The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from such estimates.

Significant Accounting Policies

Our significant accounting policies are disclosed in our annual report on Form 10-K for the year ended December 31, 2014 filed on February 26, 2015, or the Form 10-K. Since the date of those financial statements, there have been no changes to our significant accounting policies.