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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2012
Fair Value Measurements  
Schedule of carrying and fair values of financial instruments

The estimated carrying and fair values of our financial instruments in the financial statements were as follows at December 31 (dollar amounts in thousands):

 

 

 

2012

 

2011

 

 

 

Carrying

 

Fair

 

Carrying

 

Fair

 

 

 

Amount

 

Value

 

Amount

 

Value

 

 

 

 

 

 

 

 

 

 

 

Long-term debt

 

  $

347,267

 

  $

217,104

 

  $

363,300

 

  $

319,788