Summary of Significant Accounting Policies (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Summary Of Significant Accounting Policies [Line Items]
Impairment losses	$ 0	$ 0
Contract assets	$ 500,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Management service contracts, term	1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Management service contracts, term	5 years