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