Capitalization Rate

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- Definition

Debt Instrument Aggregate Rate

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No definition available.

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- Definition

Debt Instrument, Maturity, Month and Year

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- Definition

Debt instrument sub-tranche premium rate.

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No definition available.

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- Definition

Modification description of debt instrument.

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No definition available.

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- Definition

Number of vessels mortgaged.

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No definition available.

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- Definition

Percentage of required principal payments due from effective date.

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No definition available.

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- Definition

Prepackaged plan effective date.

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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

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

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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- Definition

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 rate subject to change from time to time.

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Indebtedness - Senior Debt Notes - Additional Information (Detail) kr in Thousands, $ in Thousands		1 Months Ended
	Jul. 31, 2017 Vessel	May 27, 2015 USD ($)	Mar. 31, 2015 USD ($)	Jan. 31, 2014 NOK (kr)	May 31, 2012 NOK (kr)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 NOK (kr)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 NOK (kr)
Debt Instrument [Line Items]
Debt instrument outstanding amount						$ 297,659		$ 431,456
Notes Due May 2024
Debt Instrument [Line Items]
Debt instrument maturity, month and year					2024-05
Aggregate principal amount \| kr					kr 204,400
Debt instrument bearing floating interest rate					3.88%
Indebtedness rate				1.25%
Indebtedness sub-tranche premium rate				1.00%
Total capitalization rate				6.13%
Debt instrument outstanding amount						10,300	kr 89,500
Troms Offshore Supply AS \| Notes Due April 2027
Debt Instrument [Line Items]
Debt instrument maturity, month and year		2027-04
Aggregate principal amount		$ 31,300
Debt instrument bearing floating interest rate		2.92%
Indebtedness rate		1.00%
Indebtedness sub-tranche premium rate		1.00%
Total capitalization rate		4.92%
Debt instrument outstanding amount						21,500
Troms Offshore Supply AS \| Notes Due January 2027
Debt Instrument [Line Items]
Debt instrument maturity, month and year			2027-01
Aggregate principal amount			$ 29,500
Debt instrument bearing floating interest rate			2.91%
Indebtedness rate			1.00%
Indebtedness sub-tranche premium rate			1.00%
Total capitalization rate			4.91%
Debt instrument outstanding amount						20,300
Troms Offshore Supply AS \| Notes Due January 2026
Debt Instrument [Line Items]
Debt instrument maturity, month and year				2026-01
Aggregate principal amount \| kr				kr 300,000
Indebtedness rate				1.25%
Indebtedness sub-tranche premium rate				1.00%
Total capitalization rate				4.56%
Debt instrument outstanding amount						20,788	181,250	22,988	kr 200,000
Troms Offshore Supply AS \| Notes Due January 2026 \| Minimum
Debt Instrument [Line Items]
Debt instrument bearing floating interest rate				2.31%
Troms Offshore Supply AS \| Notes Due May 2024
Debt Instrument [Line Items]
Debt instrument outstanding amount						$ 10,260	kr 89,460	$ 12,241	kr 106,500
Troms Offshore Supply AS \| Plan of Reorganization \| Senior Notes
Debt Instrument [Line Items]
Plan effective date	Mar. 31, 2019
Modification description of debt instrument	(i) reduce by 50% the required principal payments due from the Effective Date through March 31, 2019, (ii) modestly increase the interest rates on amounts outstanding through April 2023, and (iii) provide for security and additional guarantees, including (a) mortgages on six vessels and related assignments of earnings and insurances, (b) share pledges by Troms Offshore and certain subsidiaries of Troms Offshore, and (c) guarantees by certain subsidiaries of Troms Offshore.
Percentage of required principal payments due from effective date	50.00%
Number of vessels mortgaged \| Vessel	6