Commitments and Contingencies - Additional Information (Detail) MMBTU in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) MMBTU Settlement $ / MMBTU	Dec. 31, 2018 USD ($)	Mar. 31, 2016 USD ($)
Commitments And Contingencies [Line Items]
Outstanding letters of credit		$ 2,800,000
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		8,300,000
Settle of invoices held in account payable			$ 1,100,000
Recovery from litigation settlement			4,600,000
Accrued liabilities for environmental matters		$ 183,000
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
Litigation liability paid to other party	$ 18,500,000
Estimated litigation liability		$ 0	18,450,000
Global Industrial Inc [Member]
Commitments And Contingencies [Line Items]
Estimated litigation liability				$ 0
Property, Plant and Equipment [Member]
Commitments And Contingencies [Line Items]
Recovery from litigation settlement			200,000
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		2020-05
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
Natural Gas Purchase Commitments [Member]
Commitments And Contingencies [Line Items]
Natural gas purchase commitments volume | MMBTU		7.0
Weighted average cost of natural gas per unit | $ / MMBTU		2.23
Weighted average purchase price of natural gas		$ 15,700,000
Weighted average natural gas market value per unit | $ / MMBTU		2.06
Weighted average natural gas market value		$ 14,500,000
Pryor Chemical Company [Member]
Commitments And Contingencies [Line Items]
Litigation settlement, expense paid			500,000
Litigation settlement received from other party			$ 4,000,000
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
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