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v3.21.2

Long-Term Debt - Working Capital Revolver Loan and Senior Secured Notes - Additional Information (Detail) - USD ($) |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Sep. 29, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Feb. 28, 2019
Debt Instrument [Line Items] |  |  |  |  |  |  |
Dividends on convertible preferred stocks |  | $ 75,000 |  | $ 75,000 | $ 225,000 | $ 225,000 |
Redemption date |  |  |  |  | Sep. 29, 2021 |  |
Debt instrument, frequency of interest payment |  |  |  |  | Interest payable semi-annually in arrears on May 15 and October 15 of each year, beginning on May 15, 2022, to the holders of record on the immediately preceding May 1 and October 1 |  |
Gain on Extinguishment of Debt |  |  | $ 10,000,000 |  | $ 10,000,000 |  |
Maximum [Member] | Series B and Series D Preferred Stock [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Dividends on convertible preferred stocks |  |  |  |  | 2,000,000 |  |
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 |  | $ 48,200,000 |  |  | $ 48,200,000 |  |
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% |  |  | 100.00% |  |
9.625% Senior Secured Notes Due 2023 [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maturity date |  |  |  |  | May 01, 2023 |  |
Redemption date | Oct. 29, 2021 |  |  |  |  |  |
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 |  |  | $ 3,000,000 |  |
Secured Loan Agreement [Member] | El Dorado Chemical Company [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt instrument, frequency of interest payment |  |  |  |  | Principal and interest are payable in 60 equal monthly installments through March 2025. |  |
8.75% Secured Financing Due 2025 [Member] | El Dorado Ammonia L.L.C. [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maturity date |  |  |  |  | Aug. 31, 2025 |  |
Debt instrument, frequency of interest payment |  |  |  |  | principal and interest are payable in 60 equal monthly installments with a final balloon payment of approximately $5 million due in August 2025 |  |
Final balloon payment |  | 5,000,000 |  |  | $ 5,000,000 |  |
Debt issued - principal amount |  | 30,000,000 |  |  | 30,000,000 |  |
Paycheck Protection Program [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Federally guaranteed loan agreement ("PPP loan") |  | $ 10,000,000 |  |  | $ 10,000,000 |  |
Letter of Credit [Member] | Working Capital Revolver Loan [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maximum amount of revolving credit facility |  |  |  |  |  |  | $ 10,000,000

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