Settlement of Note Receivable and Lease Guarantee - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
	Jan. 31, 2020	Sep. 30, 2018	Sep. 30, 2020	Dec. 31, 2019
Settlement Of Note Receivable And Lease Guarantee [Line Items]
Provision for loss on note receivable			$ 879
Lease guarantee contingency				$ 10,724
Lawn and Garden Indemnification Claim [Member] | Guarantee Obligation [Member]
Settlement Of Note Receivable And Lease Guarantee [Line Items]
Lease expiring period			September 2025
Annual rent			$ 2,000
Liabilities and related pre tax charges		$ 10,300
Lease guarantee contingency				$ 10,700
Sale of fully reserved promissory notes and related accrued interest receivable	$ 1,200
Pre-tax gain on sale of notes receivable	$ 11,900
Lawn and Garden Business [Member]
Settlement Of Note Receivable And Lease Guarantee [Line Items]
Provision for loss on note receivable		$ 23,000