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Long-Term Debt (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Annual maturities of all long-term debt, including capitalized leases    
Total $ 332,377 $ 335,791
GSWC
   
Annual maturities of all long-term debt, including capitalized leases    
2014 6,298  
2015 290  
2016 309  
2017 327  
2018 321  
Thereafter 324,832  
Total $ 332,377 $ 335,791