Commitments and Contingencies - Additional Information (Detail) MMBTU in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2020 USD ($)	Sep. 30, 2021 USD ($) MMBTU Settlement $ / MMBTU	Dec. 31, 2020 USD ($)	Mar. 31, 2016 USD ($)
Commitments And Contingencies [Line Items]
Accrued liabilities for environmental matters		$ 500,000
Percentage of payment of investigation costs agreed by Hallowell Facility		50.00%
Insurance coverage of general liability and auto liability risks		$ 100,000,000
Product liability deductible per claim		$ 250,000
Confidential settlement agreement with family groups | Settlement		3
Liability reserve		$ 0
Accrued prejudgment and post-judgment interest	$ 1,400,000
Global Industrial Inc [Member]
Commitments And Contingencies [Line Items]
Amount awarded for labor, service, materials and other	7,400,000
Prejudgment interest	$ 1,300,000
Percentage of accrue post judgement interest	4.25%
Leidos Constructors, LLC [Member] | Global Industrial Inc [Member] | Accounts Payable [Member]
Commitments And Contingencies [Line Items]
Claim amount not approved for payment	$ 3,500,000			$ 3,500,000
Property, Plant and Equipment [Member]
Commitments And Contingencies [Line Items]
Amount recovered due settlement			$ 1,900,000
Depreciation expense	$ 500,000
Cost of Sales [Member]
Commitments And Contingencies [Line Items]
Amount recovered due settlement			$ 5,700,000
Natural Gas Purchase Commitments [Member]
Commitments And Contingencies [Line Items]
Natural gas purchase commitments volume | MMBTU		4.8
Weighted average cost of natural gas per unit | $ / MMBTU		3.84
Weighted average purchase price of natural gas		$ 18,400,000
Weighted average natural gas market value per unit | $ / MMBTU		5.55
Weighted average natural gas market value		$ 26,600,000