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The amount of a redemption.

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

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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Amount of the fee that accompanies borrowing money under the debt instrument.

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

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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

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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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The effective interest rate at the end of the reporting period.

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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 long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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Weighted average interest rate of long-term debt outstanding.

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The cash inflow from borrowings supported by a written promise to pay an obligation that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).

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Long-Term Debt - Schedule of Revolving Credit Facility and Long-Term Debt (Parenthetical) (Detail)						3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 07, 2016 USD ($)	May 13, 2016 USD ($) Installment	Apr. 02, 2016 Installment	Feb. 05, 2016 USD ($) Installment	Sep. 16, 2015 USD ($)	Sep. 30, 2016 USD ($) $ / Unit	Sep. 30, 2016 USD ($) $ / Unit	Dec. 31, 2015 USD ($)	Aug. 01, 2016	Aug. 07, 2013 USD ($)
Debt Instrument [Line Items]
Long-term debt						$ 519,585,000	$ 519,585,000	$ 520,422,000
Less current portion of long-term debt, net						$ 110,495,000	$ 110,495,000	$ 22,468,000
Proceeds of the secured promissory note		$ 4,800,000			$ 15,000,000
12% Senior Secured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate						12.00%	12.00%	12.00%
Senior Secured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate										7.75%
Debt instrument, principal amount										$ 425,000,000
Redeemable principal amount	$ 50,000,000
Redemption price	103.875%
Amended Note [Member] \| Zena Energy L.L.C [Member]
Debt Instrument [Line Items]
Maturity date			Dec. 01, 2017
Debt instrument, number of periodic payment \| Installment			20
Debt instrument basis spread on variable rate			3.00%
Secured Promissory Note Due [Member] \| Zena Energy L.L.C [Member]
Debt Instrument [Line Items]
Debt instrument, frequency of payment							Monthly
4% Working Capital Revolver Loan [Member]
Debt Instrument [Line Items]
Line of credit facility, interest rate						4.00%	4.00%	4.00%
Maturity date							Apr. 13, 2018
Maximum amount of revolving credit facility						$ 100,000,000	$ 100,000,000
Letters of credit maximum capacity						15,000,000	15,000,000
Amount available for borrowing						$ 22,600,000	$ 22,600,000
Long-term debt								$ 0
3.84% Secured Promissory Note Due 2017 [Member]
Debt Instrument [Line Items]
Maturity year							2017	2017
Long-term debt, effective Interest Rate						3.84%	3.84%	3.84%
Long-term debt						$ 8,392,000	$ 8,392,000	$ 15,856,000
5.73% Secured Promissory Note Due 2019 [Member]
Debt Instrument [Line Items]
Maturity year							2019	2019
Long-term debt, effective Interest Rate						5.73%	5.73%	5.73%
Long-term debt						$ 9,417,000	$ 9,417,000
5.25% Secured Promissory Note due 2021 [Member]
Debt Instrument [Line Items]
Long-term debt, effective Interest Rate						5.25%	5.25%	5.25%
Maturity date							Mar. 26, 2021
Long-term debt						$ 15,000,000	$ 15,000,000	$ 16,189,000
Secured promissory note, payment term							This note required interest only monthly payments for the first 12 months of the term (through April 2016) and then principal and interest monthly payments through the remaining term
4.77% Secured Promissory Note Due 2023 [Member]
Debt Instrument [Line Items]
Long-term debt, effective Interest Rate						4.77%	4.77%	4.77%
Long-term debt						$ 19,140,000	$ 19,140,000	$ 15,000,000
Other [Member]
Debt Instrument [Line Items]
Weighted-average interest rate of other debt						4.60%	4.60%	4.60%
Long-term debt						$ 4,799,000	$ 4,799,000	$ 7,103,000
12% Senior Secured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	12.00%					12.00%	12.00%
Redeemable principal amount	$ 50,000,000
Redemption price	106.00%
12% Senior Secured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate									8.50%
The maximum amount of future pari passu indebtedness						$ 25,000,000	$ 25,000,000
Long-term debt						50,000,000	50,000,000
Senior secured notes outstanding value						375,000,000	375,000,000
Interest expense recognized						500,000
Less current portion of long-term debt, net						96,200,000	96,200,000
Senior Secured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Long-term debt						$ 425,000,000	425,000,000	$ 425,000,000
Cash payment for debt holder consent							$ 5,400,000
Cash price per $1,000 principal amount of notes for consent \| $ / Unit						13.25	13.25
Other fees incurred						$ 1,400,000	$ 1,400,000
Secured Promissory Note due 2019 [Member] \| EL Dorado Chemical Company [Member]
Debt Instrument [Line Items]
Maturity date				Jun. 29, 2019
Debt instrument, number of periodic payment \| Installment				40
Proceeds of the secured promissory note				$ 10,000,000
Final balloon payment				$ 6,700,000
Secured Promissory Note Due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, number of periodic payment \| Installment		83
Final balloon payment		$ 6,100,000
Loan term after conversion		7 years
Secured Promissory Note Due 2023 [Member] \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, interest rate		4.25%
Maturity date							May 31, 2023
Debt instrument term							interest at a rate that is based on the monthly LIBOR rate plus 4.25% and matures in May 2023
Secured Promissory Note Due 2023 [Member] \| EL Dorado Ammonia L.L.C [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount					$ 19,800,000