Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements Narrative (Details)

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Fair Value Measurements Narrative (Details) - USD ($)
3 Months Ended 12 Months Ended 24 Months Ended
Dec. 31, 2019
Sep. 30, 2018
Dec. 31, 2017
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impairment charges     $ 0  
Jeffersonville [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impairment charges $ 37,600,000 $ 49,700,000   $ 85,400,000