Credit Facilities	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Credit Facilities	Credit Facilities On May 1, 2020, the Company entered into amendments to: (i) the Amended and Restated Syndicated Credit Facility Agreement, dated as of October 30, 2017 ("Credit Facility") and (ii) the Notes Purchase Agreement with certain investors governing the Series I, J, K, L and M senior notes, dated as of October 30, 2017 ("Notes Agreement"). The financial covenants in these agreements were amended to provide for the debt to EBITDA ratio to increase from 3.50 to 1.0 to 4.00 to 1.0 through December 31, 2020 (and then to revert to 3.50 to 1.0 after such date). With respect to the Credit Facility, the interest rates were amended to increase the applicable rate by 75 basis points (resulting in a rate of LIBOR + 225 basis points) and the LIBOR floor from 0.0% to 1.0%. With respect to the Notes Agreement, the interest rates were amended to increase the coupon applicable to each series of the Senior Notes by 50 basis points, effective immediately and applicable through March 31, 2021, and to increase the coupon applicable to each series of the Senior Notes by an additional 50 basis points, if and only if the debt to EBITDA ratio exceeds 3.50 to 1.0.