Description of the Business and Summary of Significant Accounting Policies - Management Fees (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Base management fee (as a percent)	2.00%
Total base management fee	$ 10.3	$ 31.6	$ 23.3
Incentive fees	$ 0.0	$ 12.6	$ 11.8
Gaylord Rockies [Member]
Business Acquisition [Line Items]
Base management fee (as a percent)	3.00%