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

No definition available.

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- Definition

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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- Definition

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.

+ References

No definition available.

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payment on derivative.

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- Definition

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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Long-Term Debt - NOK Bonds - Additional Information (Details) $ in Thousands, kr in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 NOK (kr)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 NOK (kr)
Debt Instrument [Line Items]
Carrying amount of debt	$ 1,427,228		$ 1,427,228			$ 1,481,936
Foreign exchange gains (losses)	(2,843)	$ (11,624)	$ 4,117	$ (6,885)
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			0.60%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			3.25%
Unsecured Debt
Debt Instrument [Line Items]
Senior unsecured bonds issued \| kr					kr 3,100.0		kr 3,100.0
Carrying amount of debt	354,486		$ 354,486			$ 355,514
Unsecured Debt \| Cross-currency swap agreements
Debt Instrument [Line Items]
Derivative, Notional Amount	$ 360,500		$ 360,500
Unsecured Debt \| Minimum [Member] \| Cross-currency swap agreements
Debt Instrument [Line Items]
Fixed Rate Payable	5.74%		5.74%		5.74%
Unsecured Debt \| Maximum [Member] \| Cross-currency swap agreements
Debt Instrument [Line Items]
Fixed Rate Payable	7.89%		7.89%		7.89%
Unsecured Debt \| NIBOR \| Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			4.60%
Unsecured Debt \| NIBOR \| Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			6.00%