XML 23 R42.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value Measurements (Details 3) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Carrying Amount
   
Fair value disclosures    
Long-term debt $ 1,193,000 $ 1,147,000
Estimated Fair Value
   
Fair value disclosures    
Long-term debt $ 1,297,569 $ 1,224,273