Discontinued Operations - Summary of Financial Data for Equity Method Investments Included in Discontinued Operations (Details) - Equity Method Investment, Nonconsolidated Investee or Group of Investees - EnviroFlight, LLC - Discontinued Operations, Disposed of by Sale $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	$ 16
Operating expenses	92
Operating loss	(76)
Net loss	$ (76)