Organization and Principles of Consolidation Organization and Principles of Consolidation (Policies)

6 Months Ended

Jun. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Reclassifications in Prior Period Financial Statements

Certain prior period amounts have been reclassified to conform to current period presentation. In addition, the Company has corrected the Consolidated Statements of Cash Flows related to the timing of payments for development activity that were not correctly classified as investing activity. The correction was a reclassification between cash flows from operating activities and cash flows from investing activities for the six months ended June 30, 2013. The correction resulted in an increase in cash flows from operating activities of $5.3 million during the six months ended June 30, 2013, with a corresponding increase in cash used in investing activity during the same period, which the Company has concluded was not significant.