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Investment in Unconsolidated Affiliate (Phantom) (Details)
Jun. 30, 2016
Jun. 30, 2015
Gulf Coast Fractionators [Member]    
Schedule of Equity Method Investments [Line Items]    
Ownership Percentage 38.75% 38.75%
Howard Energy Partners [Member]    
Schedule of Equity Method Investments [Line Items]    
Ownership Percentage 31.00% 31.00%