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Fixed charge coverage ratio.

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Loan Agreement Amount.

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The description of requirements under an agreement to be eligible to enter into certain transactions.

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Minimum excess borrowing availability as percentage of maximum revolver commitments.

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Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

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Face (par) amount of debt instrument at time of issuance.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

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Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

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Amount of increase (decrease) of the credit facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Long-Term Debt - Working Capital Revolver Loan and Senior Secured Notes - Additional Information (Detail) - USD ($)			6 Months Ended
	Jun. 21, 2019	Apr. 25, 2018	Jun. 30, 2020	Feb. 28, 2019
Working Capital Revolver Loan [Member]
Debt Instrument [Line Items]
Maximum amount of revolving credit facility				$ 65,000,000
Revolving credit facility, increase (decrease), net			$ 10,000,000
Amount available for borrowing			$ 12,600,000
Maturity date			Feb. 26, 2024
Springing Financials Covenant [Member] \| Working Capital Revolver Loan [Member]
Debt Instrument [Line Items]
Working capital revolver loan requirements			borrowers must maintain a minimum fixed charge coverage ratio of not less than 1.00 to 1.00.
Maximum revolver commitment available, percentage			10.00%
Loan requirements description			less than 10.0% of the total revolver commitments
Fixed charge coverage ratio			100.00%
9.625% Senior Secured Notes Due 2023 [Member]
Debt Instrument [Line Items]
Maturity date			May 01, 2023
Debt issued - principal amount	$ 35,000,000	$ 400,000,000
Debt instrument, interest rate	9.625%	9.625%	9.625%
Debt instrument, maturity term	2023	2023
Debt instrument issued price percentage	102.125%	99.509%
Debt instrument, frequency of interest payment			Interest is to be paid semiannually in arrears on May 1st and November 1st
5.25% Secured Promissory Note Due 2021 [Member]
Debt Instrument [Line Items]
Maturity date			Mar. 31, 2021
Secured promissory note, payment term			Principal and interest are payable in monthly installments.
Paycheck Protection Program [Member]
Debt Instrument [Line Items]
Federally guaranteed loan agreement (“PPP loan”)			$ 10,000,000
Federally guaranteed loan agreement (“PPP loan”), disbursement description			Under the current terms of the PPP loan, loan forgiveness applications are due within 10 months after the end of the loan forgiveness covered period which period began on the date the PPP loan was disbursed and ends either 8-weeks or 24-weeks after disbursement of the loan.
Federally guaranteed loan agreement (“PPP loan”), maturity period			2022-04
Federally guaranteed loan agreement (“PPP loan”), loan maturity period description			Currently the loan matures in April 2022 which term may be extended to April 2025 if mutually agreed to by the parties.
5.17% Secured Promissory Note Due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, frequency of interest payment			monthly
Final balloon payment			$ 6,100,000
Maturity month and year			2023-05
8.32% Secured Financing Due 2023 [Member] \| El Dorado Chemical Company [Member]
Debt Instrument [Line Items]
Maturity date			Jun. 30, 2023
Debt instrument, frequency of interest payment			Principal and interest are payable in 48 equal monthly installments with a final balloon payment of approximately $3 million due in June 2023
Final balloon payment			$ 3,000,000
Secured Loan Agreement [Member] \| El Dorado Chemical Company [Member]
Debt Instrument [Line Items]
Debt instrument, frequency of interest payment			Under the terms of the note, principal and interest are payable in 60 equal monthly installments.
Letter of Credit [Member] \| Working Capital Revolver Loan [Member]
Debt Instrument [Line Items]
Maximum amount of revolving credit facility				$ 10,000,000