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Represents the percent of net proceeds from asset sales, net of commission paid.

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

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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

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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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Weighted average interest rate of debt outstanding.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year.

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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 9 - Debt (Details Textual) - USD ($) $ in Thousands		9 Months Ended
Note 9 - Debt (Details Textual) - USD ($) $ in Thousands	Oct. 08, 2021	Sep. 30, 2021	Nov. 16, 2021	Dec. 31, 2020
Restricted Cash, Current		$ 24,092		$ 2,079
Troms Offshore [Member] \| Senior Notes [Member] \| Plan Of Reorganization [Member]
Debt Instrument, Covenant, Obligation to Prepay, Additional Amount, Maximum		45,000
Repayments of Long-term Debt, Total		23,300
Long-Term Debt, Maturity, Remainder of Fiscal Year		3,400
The 8.00% Senior Secured Notes due August 2022 [Member]
Debt Instrument, Repurchased Face Amount		11,800
Debt Instrument, Face Amount		$ 100
Debt Instrument, Interest Rate, Stated Percentage		8.00%		8.00%
The 8.00% Senior Secured Notes due August 2022 [Member] \| Tender Offer [Member]
Percentage Of Proceeds From Asset Sales Net Of Commission Paid		65.00%
The 8.00% Senior Secured Notes due August 2022 [Member] \| Fair Value, Inputs, Level 2 [Member]
Debt Instrument, Fair Value Disclosure, Total		$ 136,400		$ 141,400
Troms Offshore Borrowings [Member] \| Fair Value, Inputs, Level 2 [Member] \| Troms Offshore [Member]
Debt Instrument, Fair Value Disclosure, Total		$ 23,600		$ 51,600
Debt, Weighted Average Interest Rate		5.00%
Nordic Bond [Member] \| Subsequent Event [Member]
Debt Instrument, Face Amount	$ 175,000
Debt Instrument, Term (Year)	5 years
Debt Instrument, Interest Rate, Stated Percentage			8.50%