Nature of the Business, Basis of Presentation and Significant Accounting Policies - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments | segment			2
Percentage of consolidated assets net revenues and net income reported by reportable operating segment			100.00%
COVID-19, grant income	$ 7,900,000	$ 0	$ 7,900,000	$ 0
COVID-19, deferred social security payroll tax	$ 2,100,000		$ 2,100,000