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Segment Reporting
3 Months Ended
Mar. 31, 2015
Segment Reporting [Abstract]  
Segment Reporting
Segment Reporting

We report segment information using the “management approach.” Under this approach, operating segments are identified in substantially the same manner as they are reported internally and used by us for purposes of evaluating performance and allocating resources. Based on this approach, we have one reportable segment. Our management reporting process is based on our internal operating structure.