Goodwill and Intangible Assets - Impairment Testing - Additional Information (Details) - USD ($)		3 Months Ended		12 Months Ended
	May 31, 2020	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Goodwill impairment charge		$ 0		$ 55,200,000
Intangible asset impairment charge		$ 0
Paper Reporting Unit
Finite Lived Intangible Assets [Line Items]
Goodwill impairment charge	$ 55,200,000		$ 55,200,000