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Fair Value of Financial Instruments - Narrative (Details) - USD ($)		6 Months Ended
	Jun. 09, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Fair value of financial instruments
Impairment due to credit losses		$ 0
Contingent consideration liability accrued in USWM Acquisition		115,700,000	$ 0
MDD US Enterprises LLC (Formerly USWM Enterprises)
Fair value of financial instruments
Contingent consideration liability accrued in USWM Acquisition	$ 115,700,000
Fair Value (Level 3) \| MDD US Enterprises LLC (Formerly USWM Enterprises)
Fair value of financial instruments
Contingent consideration liability accrued in USWM Acquisition		115,700,000
Recurring \| Fair Value (Level 3)
Fair value of financial instruments
Total assets at fair value		$ 0		$ 0