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HRE Trust Fund Proceeds (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2013
Jul. 10, 2013
HRE Trust Fund Proceeds [Line Items]      
HRE Trust Fund Proceeds 15.00%    
Gross Proceeds from HRE Trust   $ 7.9 $ 23.0
Purses      
HRE Trust Fund Proceeds [Line Items]      
Gross Proceeds from HRE Trust   3.6  
Other Income      
HRE Trust Fund Proceeds [Line Items]      
Gross Proceeds from HRE Trust   $ 4.2