Exercise price per share of warrants or rights issued during period.

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Number of offshore support vessels.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the preclosing working capital adjustments.

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Represents the original life of the asset.

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Number of shares of equity interests issued or issuable to acquire entity.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Note 3 - Acquisition of Swire Pacific Offshore Holdings Ltd (Details Textual) $ / shares in Units, $ in Thousands		2 Months Ended	3 Months Ended	6 Months Ended
	Apr. 22, 2022 USD ($) $ / shares shares	Jun. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)
Warrans Issued to Acquire Swire Pacific Offshore Holdings Ltd. [Member]
Class of Warrant or Right, Issued During Period, Exercise Price (in dollars per share) \| $ / shares	$ 0.001
Swire Pacific Offshore Holdings Ltd. [Member]
Number of Vessels, Offshore Support	50
Payments to Acquire Businesses, Gross	$ 42,000
Payments to Acquire Businesses, Preclosing Working Capital Adjustments	19,600
Business Combination, Consideration Transferred, Total	223,500
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		$ 43,200
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		5,300
Business Combination, Acquisition Related Costs			$ 7,200	$ 9,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total	$ 179,707	179,700	179,700	$ 179,700
Property, Plant and Equipment, Original Lie of Asset (Year)				20 years
Goodwill, Ending Balance		$ 0	$ 0	$ 0
Swire Pacific Offshore Holdings Ltd. [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)				1 year
Swire Pacific Offshore Holdings Ltd. [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)				16 years
Swire Pacific Offshore Holdings Ltd. [Member] \| Warrans Issued to Acquire Swire Pacific Offshore Holdings Ltd. [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) \| shares	8,100,000