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Investments
Dec. 31, 2011
Investments [Abstract]  
Schedule Of Long Term Investments [Table Text Block]
Thousands  2011  2010
Investments in life insurance policies $ 51,911 $ 51,090
Investments in gas pipeline joint ventures   14,340   15,742
Other   2,012   2,262
 Total other investments $ 68,263 $ 69,094