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Investment in Unconsolidated Affiliate
3 Months Ended
Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]  
Investment in Unconsolidated Affiliate
4. Investment in Unconsolidated Affiliate

The Company owns a 49% interest in StoneRiver Group, L.P. (“StoneRiver”), which is accounted for as an equity method investment, and reports its share of StoneRiver’s net income as income from investment in unconsolidated affiliate. The Company’s investment in StoneRiver was $21 million at both March 31, 2015 and December 31, 2014, and was reported within other long-term assets in the consolidated balance sheets. To the extent that the Company’s cost basis is different than the basis reflected at the unconsolidated affiliate level, the basis difference is generally amortized over the lives of the related assets and included in the Company’s share of equity in earnings of the unconsolidated affiliate.