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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2014
Estimated Fair Values of Other Financial Instruments

The estimated fair values of other financial instruments subject to fair value disclosures, determined based on Level One inputs including broker quotes or quoted market prices or rates for the same or similar instruments and the related carrying amounts are as follows:

 

     December 31, 2014      December 31, 2013  
     Carrying Amount      Fair Value      Carrying Amount      Fair Value  

Long-term debt, including current portion

   $ 1,394,077       $ 1,601,418       $ 1,427,319       $ 1,786,232