Discontinued Operations - Summarized Balance Sheet Information (Details) - USD ($) $ in Thousands	2 Months Ended	3 Months Ended
	Feb. 28, 2019	Mar. 31, 2020	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Debt and Equity Securities, Realized Gain (Loss), Excluding Other-than-temporary Impairment		$ 0	$ (4,900)	$ (5,300)
Liabilities:
Noncontrolling interest of discontinued operations		53,808			$ 50,548
Income from discontinued operations, net of income tax		$ 0		1,427
Manitoba Harvest [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue	$ 10,024
Liabilities:
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)	4,874
Disposal Group, Including Discontinued Operation, Operating Income (Loss)	(1,118)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	(1,127)
Discontinued Operation, Tax Effect of Discontinued Operation	(541)
Income from discontinued operations, net of income tax	$ (586)
Clean Earth
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue				63,632
Liabilities:
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)				16,633
Disposal Group, Including Discontinued Operation, Operating Income (Loss)				1,256
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax				991
Discontinued Operation, Tax Effect of Discontinued Operation				(1,022)
Income from discontinued operations, net of income tax				$ 2,013