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Represents the cost associated with debt modification.

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The percentage of equity interests for collateral of the debt instrument.

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No definition available.

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The amount of minimum free liquidity under the covenant of the debt instrument.

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The percentage of net interest bearing debt for minimum free liquidity requirement under covenant of the debt instrument.

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The maximum additional amount representing a percentage of prepayments pursuant to the debt amendment.

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The minimum equity ratio percentage of the covenant of the debt instrument.

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The issue price percentage of debt instrument.

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The minimum aggregate nominal amount outstanding that will trigger mandatory prepayment of the debt instrument.

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The minimum amount of vessel collateral that will trigger mandatory prepayment of the debt instrument

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The percentage of interest payment obligation to be deposited into the reserve account each month for the debt instrument.

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No definition available.

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The amount of the option to issue additional debt instruments.

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Represents the percentage of premium paid on debt repurchase.

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

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No definition available.

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

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Contractual interest rate for funds borrowed, under the debt agreement.

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Fair value amount of debt instrument that was repurchased.

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Face (par) amount of the original debt instrument that was repurchased.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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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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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, 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 fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Note 3 - Debt (Details Textual) $ in Thousands, kr in Millions		1 Months Ended	12 Months Ended				36 Months Ended
	Nov. 16, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 NOK (kr)	Nov. 30, 2020 USD ($)	Nov. 30, 2019 USD ($)	Jul. 31, 2017 USD ($)
Gain (Loss) on Extinguishment of Debt, Total			$ (11,100)	$ 0	$ 0
Restricted Cash, Current		$ 2,079	1,240	2,079
Troms Offshore [Member] \| Senior Notes [Member] \| Plan Of Reorganization [Member]
Debt Instrument, Covenant, Obligation to Prepay, Additional Amount, Maximum		45,000		$ 45,000
Repayments of Long-term Debt, Total		$ 12,500	23,300
Tender Offer [Member]
Debt Instrument, Repurchased Face Amount									$ 125,000
Debt Instrument, Repurchase Amount									$ 135,600
Premium Paid On Debt Repurchase									8.50%
Cost Associated With Debt Modification									$ 11,400
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 25,000
Long-term Line of Credit, Total			0
Debt Instrument, Mandatory Prepayment, Minimum Vessel Collateral	75,000
Debt Instrument, Mandatory Prepayment, Minimum Aggregate Nominal Amount Outstanding	$ 75,000
Revolving Credit Facility [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	4.00%
Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	4.00%
Nordic Bond [Member]
Debt Instrument, Face Amount	$ 175,000
Debt Instrument, Issue Price Percentage	98.50%
Debt Instrument, Interest Rate, Stated Percentage	8.50%
Debt Instrument, Option to Issue Additional Amount	$ 25,000
Debt Instrument, Monthly Deposit into Reserve Account, Percentage of Interest Payment	16.67%
Debt Instrument, Covenant, Minimum Free Liquidity Amount	$ 20,000
Debt Instrument, Covenant, Minimum Free Liquidity, Percentage of Net Interest Bearing Debt	10.00%
Debt Instrument, Covenant, Percentage of Minimum Equity Ratio	30.00%
Long-term Debt, Fair Value			177,600
Nordic Bond [Member] \| GOLP and TMII [Member]
Debt Instrument, Collateral, Percentage of Equity Interests	66.00%
The 8.00% Senior Secured Notes due August 2022 [Member]
Debt Instrument, Face Amount										$ 350,000
Debt Instrument, Interest Rate, Stated Percentage	8.00%	8.00%		8.00%						8.00%
Gain (Loss) on Extinguishment of Debt, Total	$ (11,100)
Repayments of Debt			$ 11,800	$ 27,700
Debt Instrument, Repurchased Face Amount								$ 50,000
Debt Instrument, Repurchase Amount								$ 50,300
NOK Denominated Notes Due May 2024 and January 2026 [Member] \| Troms Offshore [Member]
Debt Instrument, Term (Year)							12 years
NOK Denominated Notes Due January 2026 [Member] \| Troms Offshore [Member]
Debt Instrument, Face Amount \| kr							kr 504.4
Debt Instrument, Interest Rate, Stated Percentage			8.50%
USD Denominated Notes Due January 2027 [Member] \| Troms Offshore [Member]
Debt Instrument, Face Amount						$ 60,800
Debt Instrument, Term (Year)						12 years
Long-term Debt, Total		$ 50,900		$ 50,900
USD Denominated Notes Due January 2027 [Member] \| Troms Offshore [Member] \| Minimum [Member]
Capitalization Rate						4.56%
USD Denominated Notes Due January 2027 [Member] \| Troms Offshore [Member] \| Maximum [Member]
Capitalization Rate						6.13%