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

+ References

No definition available.

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Weighted average interest rate of debt outstanding.

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No definition available.

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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	1 Months Ended
Note 9 - Debt (Details Textual) - USD ($) $ in Thousands	Jan. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Restricted Cash, Current		$ 9,061	$ 2,079
Troms Offshore [Member] \| Plan Of Reorganization [Member]
Debt, Weighted Average Interest Rate		5.00%
Troms Offshore [Member] \| Plan Of Reorganization [Member] \| Senior Notes [Member]
Debt Instrument, Covenant, Obligation to Prepay, Additional Amount, Maximum		$ 45,000
Repayments of Long-term Debt, Total	$ 13,200
The 8.00% Senior Secured Notes due August 2022 [Member]
Debt Instrument, Repurchased Face Amount		11,800
Debt Instrument, Face Amount		$ 100
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		$ 134,200	141,400
Troms Offshore Borrowings [Member] \| Fair Value, Inputs, Level 2 [Member] \| Troms Offshore [Member]
Debt Instrument, Fair Value Disclosure, Total		36,300	$ 51,600
Debt Obligation Prepayment Due in the Second Quarter of 2021 [Member] \| Troms Offshore [Member] \| Plan Of Reorganization [Member] \| Senior Notes [Member] \| Current Portion of long-term Debt [Member]
Long-Term Debt, Maturity, Remainder of Fiscal Year		9,700
Debt Obligation Prepayment Due in the Fourth Quarter of 2021 [Member] \| Troms Offshore [Member] \| Plan Of Reorganization [Member] \| Senior Notes [Member] \| Current Portion of long-term Debt [Member]
Long-Term Debt, Maturity, Remainder of Fiscal Year		$ 3,400