Credit Agreement (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($)	Aug. 31, 2020 USD ($)	Aug. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Sep. 30, 2019
Credit Facility (Textual) [Abstract]
Minimum Net Leverage Ratio	3.25
Minimum Debt Service Coverage Ratio	1.15
Letter of credit		$ 36.0	$ 40.0	$ 15.0
Line of Credit Facility, Remaining Borrowing Capacity	$ 66.0
Weighted average interest rate	2.64%				4.54%
Revolving Credit Facility [Member]
Credit Facility (Textual) [Abstract]
JP Morgan Credit Agreement Limit	$ 100.0
JP Morgan Agreement Potential Future Credit Limit	$ 150.0