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Investment in Unconsolidated Entities (Tables) | 6 Months Ended
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Jun. 30, 2015
Equity Method Investment, Summarized Financial Information |
Equity method investments, summarized financial position |
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2015 |  | 2014 |  | 2015 |  | 2014
(Dollars in thousands) |  |  |  |  |  |  |  |  |  |  |
Revenues | $ | 1,720,964 |  | $ | 1,629,724 |  | $ | 3,450,785 |  | $ | 3,250,114
Operating expenses |  | 1,276,758 |  |  | 1,204,588 |  |  | 2,563,479 |  |  | 2,334,226
Operating income |  | 444,206 |  |  | 425,136 |  |  | 887,306 |  |  | 915,888
Other income, net |  | (10,451) |  |  | 640 |  |  | (5,623) |  |  | 2,403
Net i ncome | $ | 433,755 |  | $ | 425,776 |  | $ | 881,683 |  | $ | 918,291

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