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Orange County-Poughkeepsie Limited Partnership (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
item
Dec. 31, 2012
Dec. 31, 2011
Orange County-Poughkeepsie Limited Partnership [Abstract]      
Equity interest in O-P 8.108% 8.108%  
Annual cash distributions to the Company from the O-P $ 13,000,000 $ 13,000,000 $ 13,600,000
Aggregate strike price 50,000,000    
Equity method investment put option value multiplier times EBITDA 0.081081    
Equity method investment, amount the investment account was reduced to   $ 0