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Orange County-Poughkeepsie Limited Partnership (Narrative) (Details) (USD $)
6 Months Ended 12 Months Ended 6 Months Ended
Jun. 30, 2012
Dec. 31, 2012
Jun. 30, 2013
Jun. 30, 2013
Scenario, Forecast [Member]
Jun. 30, 2013
Multiplied Value [Member]
Scenario, Forecast [Member]
item
Jun. 30, 2013
Ownership Percentage [Member]
Scenario, Forecast [Member]
item
Schedule of Equity Method Investments [Line Items]            
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    
Aggregate strike price       50,000,000    
Equity method investment put option value multiplier times EBITDA         5 0.081081
Equity method investment, amount the investment account was reduced to $ 0