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Investment in Unconsolidated Entities (Tables)
 9 Months Ended
Sep. 30, 2015
Equity Method Investment, Summarized Financial Information  
Equity method investments, summarized financial position

 

Three Months Ended September 30,

 

Nine Months Ended September 30,

 

2015

 

2014

 

2015

 

2014

(Dollars in thousands)

 

 

 

 

 

 

 

 

 

 

 

Revenues

$ 

1,738,488 

 

$ 

1,649,160 

 

$ 

5,199,305 

 

$ 

4,876,269 

Operating expenses

 

1,267,820 

 

 

1,230,366 

 

 

3,840,462 

 

 

3,554,598 

Operating income

 

470,668 

 

 

418,794 

 

 

1,358,843 

 

 

1,321,671 

Other income (loss), net

 

(10,236)

 

 

4,752 

 

 

(16,744)

 

 

7,178 

Net income

$

460,432 

 

$

423,546 

 

$

1,342,099 

 

$

1,328,849