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Applicable interest rate on united states treasury securities.

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Consent fee paid.

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Consent fee paid in kind.

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Debt covenant consolidated asset coverage ratio.

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Debt Disclosure [Line Items]

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Percentage of holders of notes needed to accelerate repayment should there be an event of default.

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Debt instrument covenant minimum capital expenditure.

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Debt instrument covenant net proceeds in excess of asset disposition to be used for redemption.

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Debt instrument covenant revenue cure period.

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Debt Instrument covenant unrestricted cash and unrestricted permitted investments maximum.

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Debt instrument debt default threshold for acceleration.

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Debt instrument excess cash flow repayment percentage.

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Debt Instrument, Interest Rate, Stated Percentage Increase.

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Debt Instrument, Premium Percentage

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Debt instrument revenue covenant.

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Debt instrument uncured period.

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Percentage of consolidated revenue.

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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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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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

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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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Percentage of principal amount of debt redeemed.

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Fair value amount of debt instrument that was repurchased.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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LONG-TERM DEBT - Additional Information (Detail)		3 Months Ended		12 Months Ended
LONG-TERM DEBT - Additional Information (Detail)	Jun. 27, 2019 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2021	Jul. 10, 2020 USD ($)
Debt Disclosure [Line Items]
Amortization of deferred financing fees				$ 3,900,000	$ 7,300,000
Long term debt, outstanding				321,032,000	$ 368,337,000
Write off unamortized deferred financing fees				$ 6,900,000
7.875% notes, due 2021
Debt Disclosure [Line Items]
Long-term debt, interest rate				7.875%
Long term debt, outstanding				$ 175,000,000
9.875% notes, due 2024 \| Private Placement
Debt Disclosure [Line Items]
Long-term debt, interest rate	9.875%			9.875%	9.875%
11.500% notes, due 2024 \| Private Placement
Debt Disclosure [Line Items]
Long-term debt, interest rate	11.50%			11.50%	11.50%
Senior Secured Notes
Debt Disclosure [Line Items]
Long-term debt, principal amount							$ 349,582,918
Interest payable, Description				Interest is payable quarterly in arrears on the 30th day of each March, June, September and December, commencing September 30, 2019.
Maturity date	Jun. 30, 2024
Interest payable option, Description				The Senior Secured Notes will require cash interest payments at 9.875% for all interest periods after January 30, 2022.
Applicable interest rate on united states treasury securities	0.50%
Redemptions from asset dispositions	$ 55,000,000
Percentage of principal amount of debt redeemed	2.00%
Redemption of senior secured notes				$ 60,000,000
Percentage of excess cash flow	75.00%
Debt covenant, aggregate amount of capital expenditures			$ 20,000,000
Debt covenant, unrestricted cash and unrestricted permitted investments		$ 12,500,000
Uncured period				15 days
Covenant compliance, percentage				25.00%
Percentage of consolidated revenue				15.00%
Debt instrument, revenue covenant				$ 30,000,000
Revenue - cure period				30 days
Interest rate increase percentage				13.50%
Consent fee paid				$ 5,000
Cash payment of consent fee				3,500
Consent fee paid in kind				$ 1,500
Senior Secured Notes \| Maximum
Debt Disclosure [Line Items]
Debt covenant, consolidated asset coverage ratio				1.40
Senior Secured Notes \| Minimum
Debt Disclosure [Line Items]
Debt instrument, acceleration of or failure to pay				$ 5,000,000
Senior Secured Notes \| Scenario, Forecast \| Maximum
Debt Disclosure [Line Items]
Debt covenant, consolidated asset coverage ratio						1.60
Senior Secured Notes \| Redeemed Before June 27, 2021
Debt Disclosure [Line Items]
Debt instrument redemption price percentage	4.00%
Senior Secured Notes \| Redemption Date Through June 27, 2021
Debt Disclosure [Line Items]
Debt instrument redemption price percentage	11.50%
Senior Secured Notes \| Redeemed On Or After June 27, 2021 and Before June 27, 2022
Debt Disclosure [Line Items]
Debt instrument redemption price percentage	5.00%
Senior Secured Notes \| Redeemed On Or After June 27, 2022 and Before June 27, 2023
Debt Disclosure [Line Items]
Debt instrument redemption price percentage	3.00%
Senior Secured Notes \| Redeemed On Or After June 27, 2023
Debt Disclosure [Line Items]
Debt premium percentage	0.00%
Senior Secured Notes \| In Cash
Debt Disclosure [Line Items]
Long-term debt, interest rate	9.875%
Senior Secured Notes \| Option Through January 30, 2022 - In Cash
Debt Disclosure [Line Items]
Long-term debt, interest rate	7.50%
Senior Secured Notes \| Option Through January 30, 2022 - Payable in Kind
Debt Disclosure [Line Items]
Long-term debt, interest rate	4.00%
Senior Secured Notes \| Payable Remaining Term of Notes - In Cash
Debt Disclosure [Line Items]
Long-term debt, interest rate				9.875%
Senior Secured Notes \| Private Placement
Debt Disclosure [Line Items]
Long-term debt, principal amount	$ 385,000,000
Gross proceeds from the sale of the senior secured notes	371,500,000
Long-term debt, debt issuance costs	$ 7,000,000