Summary of Significant Accounting Policies - Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2019
Buildings and land improvements | Minimum
Property and equipment
Useful life	25 years
Buildings and land improvements | Maximum
Property and equipment
Useful life	30 years
Leasehold improvements | Minimum
Property and equipment
Useful life	10 years
Leasehold improvements | Maximum
Property and equipment
Useful life	30 years
Furnishings, fixtures and equipment | Minimum
Property and equipment
Useful life	3 years
Furnishings, fixtures and equipment | Maximum
Property and equipment
Useful life	15 years
Computer software and equipment
Property and equipment
Useful life	5 years