Commitments and Contingencies - Additional Information (Detail) MMBTU in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) MMBTU Settlement $ / MMBTU T	Dec. 31, 2018 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2016 USD ($)
Commitments And Contingencies [Line Items]
Outstanding letters of credit	$ 2,500,000
Estimated share of the annual operating costs of pipeline, minimum	100,000
Estimated share of the annual operating costs of pipeline, maximum	$ 150,000
Operating agreement	The initial term of the operating agreement is through December 2053.
Indemnify the sureties for payments	$ 10,000,000
Payments under employment and severance agreements	8,600,000
Settle of invoices held in account payable		$ 1,100,000
Recovery from litigation settlement		4,600,000
Accrued liabilities for environmental matters	$ 468,000
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	1,600,000
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%
Property Plant And Equipment [Member]
Commitments And Contingencies [Line Items]
Recovery from litigation settlement		200,000
Accrued accounts payable	$ 3,900,000
Depreciation expense	$ 500,000
Cost of Sales [Member]
Commitments And Contingencies [Line Items]
Recovery from litigation settlement		4,400,000
UAN Supply Agreement [Member]
Commitments And Contingencies [Line Items]
Current terms of agreement expiry date	2021-06
Ammonia Supply Agreement [Member]
Commitments And Contingencies [Line Items]
Current terms of agreement expiry date	2022-06
Supply commitment, description	the ammonia that (a) will be produced at the El Dorado Facility and (b) a portion that is in excess of EDC’s needs as defined.
Notice of termination	notice of termination at least nine months prior to the end of term
Nitric Acid Supply Agreement [Member]
Commitments And Contingencies [Line Items]
Required period for notice of termination	180 days
Supply commitment, description	The initial contract term began in 2021 and extends through 2027
Term of Renewal	1 year
Nitric Acid Supply Agreement [Member] | Minimum [Member]
Commitments And Contingencies [Line Items]
Quantity of Nitric Acid, Minimum | T	70,000
Nitric Acid Supply Agreement [Member] | Maximum [Member]
Commitments And Contingencies [Line Items]
Quantity of Nitric Acid, Minimum | T	100,000
Natural Gas Purchase Commitments [Member]
Commitments And Contingencies [Line Items]
Natural gas purchase commitments volume | MMBTU	3.8
Weighted average cost of natural gas per unit | $ / MMBTU	2.80
Weighted average purchase price of natural gas	$ 10,600,000
Weighted average natural gas market value per unit | $ / MMBTU	2.36
Weighted average natural gas market value	$ 9,000,000.0
Pryor Chemical Company [Member]
Commitments And Contingencies [Line Items]
Litigation settlement received from other party		4,000,000.0
Litigation settlement, expense paid		$ 500,000
Pryor Chemical Company [Member] | UAN Supply Agreement [Member]
Commitments And Contingencies [Line Items]
Required period for notice of termination	90 days
Coffeyville Resources Nitrogen Fertilizers L.L.C. [Member] | UAN Supply Agreement [Member]
Commitments And Contingencies [Line Items]
Required period for notice of termination	180 days
EL Dorado Chemical Company [Member]
Commitments And Contingencies [Line Items]
Litigation settlement received from other party	$ 4,300,000
Litigation settlement, parts awarded from other party	300,000
Litigation settlement, services and parts awarded from other party	2,500,000
Litigation settlement, expense paid	2,700,000
Settle of invoices held in account payable	3,200,000
EL Dorado Chemical Company [Member] | Property Plant And Equipment [Member]
Commitments And Contingencies [Line Items]
Recovery from litigation settlement	1,900,000
EL Dorado Chemical Company [Member] | Cost of Sales [Member]
Commitments And Contingencies [Line Items]
Recovery from litigation settlement	5,700,000
Leidos Constructors, LLC [Member]
Commitments And Contingencies [Line Items]
Liability reserve	$ 0		$ 0
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