Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Jan. 01, 2019
Provision for income tax	$ 53,000	$ 238,000
Remaining AMT refunds	1,600,000
Right-of-use assets			$ 434,200,000
Lease liabilities			$ 278,300,000
Federal [Member]
Provision for income tax	$ 0