Debt instrument issued price percentage.

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Debt instrument maturity period.

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Debt instrument maturity term.

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Fixed charge coverage ratio.

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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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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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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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No definition available.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of the cost of borrowed funds accounted for as interest expense.

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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 ($)				1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 21, 2019	May 28, 2019	Apr. 25, 2018	Feb. 28, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Debt issuance costs			$ 15,200,000
Interest expense, net			900,000			$ 46,389,000	$ 43,064,000	$ 37,267,000
Loss on extinguishment of debt					$ 5,951,000		$ 5,951,000
Working Capital Revolver Loan [Member]
Debt Instrument [Line Items]
Maximum amount of revolving credit facility				$ 75,000,000
Amount available for borrowing						$ 42,100,000
Maturity date						Feb. 26, 2024
Working Capital Revolver Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate				1.50%
Working Capital Revolver Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate				1.75%
Working Capital Revolver Loan [Member] \| Wells Fargo Capital Finance, Inc. [Member] \| Prime Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate				0.50%
Working Capital Revolver Loan [Member] \| Wells Fargo Capital Finance, Inc. [Member] \| Prime Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate				0.75%
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%	9.625%
Debt instrument, maturity term	2023		2023
Debt instrument issued price percentage	102.125%		99.509%
Debt instrument, frequency of interest payment						Interest on the Senior Secured Notes accrues at a rate of 9.625% per annum and is payable semi-annually in arrears on May 1 and November 1 of each year.
Senior Secured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Debt issued - principal amount			$ 375,000,000
Debt instrument, maturity term			2019
Loss on extinguishment of debt			$ 6,000,000
Senior Secured Notes [Member] \| Optional Redemption prior to May 1, 2022 [Member]
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage						3.609%
Senior Secured Notes [Member] \| Change of Control [Member]
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage						101.00%
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.
6.03% Secured Promissory Note Due May 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. 01, 2023
Debt issued - principal amount		$ 15,000,000
Debt instrument, frequency of interest payment						Beginning in June 2019, principal and interest are payable in 48 equal monthly installments with a final balloon payment of approximately $3 million due on June 1, 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						Principal and interest will be payable in 60 equal monthly installments under the term loan.
Secured Loan Agreement [Member] \| Maximum [Member] \| El Dorado Chemical Company [Member]
Debt Instrument [Line Items]
Amount available for borrowing						$ 7,500,000
Letter of Credit [Member] \| Working Capital Revolver Loan [Member]
Debt Instrument [Line Items]
Maximum amount of revolving credit facility				$ 10,000,000