Store Impairment and Restructuring Charges (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Property, plant and equipment impairment	$ 0	$ 31,277,000
Total			$ 35,329,000	$ 50,322,000
Cost of Sales [Member]
Inventory reserves			12,880,000	21,284,000
Restructuring Charges [Member]
Operating lease asset impairment			15,520,000	14,943,000
Property, plant and equipment impairment			2,065,000	4,680,000
Labor and other costs incurred closing stores			$ 4,864,000	8,754,000
Severance				$ 661,000