LIBOR margin rate.

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- Definition

Long-term bank debt.

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No definition available.

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- Definition

Period of forgiveness of term loan.

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No definition available.

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- Definition

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

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- Definition

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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No definition available.

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- Definition

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

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- Definition

Weighted average interest rate of debt outstanding.

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No definition available.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

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Date the credit facility first became available, in CCYY-MM-DD format.

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- Definition

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

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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No definition available.

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Amount of cash inflow from issuance of long-term debt classified as other.

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Long-Term Debt - Additional Information (Detail) - USD ($) $ in Thousands			12 Months Ended
	Feb. 11, 2021	May 31, 2020	Dec. 31, 2017	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Feb. 15, 2017
Debt Instrument [Line Items]
Outstanding borrowings under revolving credit facility					$ 35,950
Weighted-average interest rate of borrowings					5.31%
Credit facility remaining borrowing capacity					$ 4,050
Long-term Debt, Current Maturities					$ 780	$ 487
Loan Under Paycheck Protection Programme [Member]
Debt Instrument [Line Items]
Long-term Debt, Current Maturities				$ 780
Long-term bank debt				$ 975,000
Loan Under Paycheck Protection Programme [Member] \| Eastern Oilwells Service Corporation [Member]
Debt Instrument [Line Items]
Proceeds from scheme based loan		$ 470
Loan Under Paycheck Protection Programme [Member] \| Prime Operating Company And Eastern Oilwells Company [Member]
Debt Instrument [Line Items]
Long term debt stated rate of interest		1.00%
Loan Under Paycheck Protection Programme [Member] \| Prime Operating Company And Eastern Oilwells Company [Member] \| Possible Forgiveness Of Loan [Member]
Debt Instrument [Line Items]
Period of forgiveness of term loan		10 months
Loan Under Paycheck Protection Programme [Member] \| Prime Operating Company [Member]
Debt Instrument [Line Items]
Proceeds from scheme based loan		$ 1,280
2017 Credit Agreement [Member]
Debt Instrument [Line Items]
Credit facility borrowing capacity								$ 300,000
Credit agreement date			Feb. 15, 2017
Line of credit facility, expiration date			Feb. 15, 2021
Equipment Loan, face amount	$ 40,000
Equipment Loan, maturity date	Feb. 11, 2023
2017 Credit Agreement [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	3.00%
LIBOR Margin Rate	4.00%
2017 Credit Agreement [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	2.00%
LIBOR Margin Rate	3.00%
Base Rate And Libor [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Debt instrument basis weighted average interest rate spread on variable rate					5.27%		4.81%