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Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2017 | Sep. 30, 2017 | Jan. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Aug. 01, 2016
Secured Promissory Note Due 2017 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net proceeds from sale of oil and gas properties | $ 3,500,000 |  |  |  |  |
Working Capital Revolver Loan [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum amount of revolving credit facility |  |  | $ 50,000,000 |  |  |
Line of credit facility, additional borrowing capacity |  |  | 25,000,000 |  |  |
Letters of credit maximum capacity |  |  | $ 10,000,000 |  |  |
Amount available for borrowing |  | $ 38,600,000 |  |  |  |
Maturity date |  | Jan. 17, 2022 |  |  |  |
Springing maturity date |  | 90 days |  |  |  |
4.75% Working Capital Revolver Loan [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, interest rate |  | 4.75% |  | 4.75% |  |
5.73% Secured Promissory Note Due 2019 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt, effective Interest Rate |  | 5.73% |  | 5.73% |  |
5.73% Secured Promissory Note Due 2019 [Member] | EL Dorado Chemical Company [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maturity date |  | Jun. 29, 2019 |  |  |  |
Debt instrument, frequency of interest payment |  | monthly |  |  |  |
Final balloon payment |  | $ 6,700,000 |  |  |  |
5.48% Secured Promissory Note Due 2023 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt, effective Interest Rate |  | 5.48% |  | 5.48% |  |
Debt instrument, frequency of interest payment |  | monthly |  |  |  |
Final balloon payment |  | $ 6,100,000 |  |  |  |
Maturity month and year |  | 2023-05 |  |  |  |
5.48% Secured Promissory Note Due 2023 [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument term |  | interest at a rate that is based on the monthly LIBOR rate plus a base rate. |  |  |  |
Other [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Weighted-average interest rate of other debt |  | 4.51% |  | 4.51% |  |
Springing Financials Covenant [Member] | Working Capital Revolver Loan [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Working capital revolver loan requirements |  | Borrowers must maintain (a) with respect to relevant periods ending on or prior to September 30, 2017, a minimum EBITDA in the amount set forth in the Working Capital Revolver Loan Amendment and (b) with respect to relevant periods ending after September 30, 2017, 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 or equal to the greater of 10.0% of the total revolver commitments and $5 million. |  |  |  |
Fixed charge coverage ratio |  | 1.00% |  |  |  |
Springing Financials Covenant [Member] | Working Capital Revolver Loan [Member] | Maximum [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt |  | $ 5,000,000 |  |  |  |
Senior Secured Notes Due 2019 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maturity date |  | Aug. 01, 2019 |  |  |  |
Debt instrument, frequency of interest payment |  | Interest is to be paid semiannually on February 1st and August 1st. |  |  |  |
Debt instrument, interest rate |  |  |  |  | 7.75% | 8.50%
5.25% Secured Promissory Note Due 2021 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long-term debt, effective Interest Rate |  | 5.25% |  | 5.25% |  |
Maturity date |  | Mar. 26, 2021 |  |  |  |
Secured promissory note, payment term |  | Principal and interest are payable in monthly installments. |  |  |  |

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