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Note 5 - Stockholders' Equity and Dilutive Equity Instruments (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

(In Thousands)		Three Months Ended
		June 30, 2024				June 30, 2023
Balance at March 31, 2024 and 2023		$	5,209			$	8,254
Unrealized gain (loss) on note receivable			73				(184	)
Pension benefits recognized in OCI			(220	)			(3,504	)
Balance at June 30, 2024 and 2023		$	5,062			$	4,566

(In Thousands)		Six Months Ended
		June 30, 2024				June 30, 2023
Balance at December 31, 2023 and 2022		$	5,266			$	8,576
Unrealized gain (loss) on note receivable			153				(316	)
Pension benefits recognized in OCI			(357	)			(3,694	)
Balance at June 30, 2024 and 2023		$	5,062			$	4,566

Schedule of Total Shares Outstanding Including Warrants and Restricted Stock Units [Table Text Block]

Total shares outstanding including warrants, restricted stock units and stock options		June 30, 2024				June 30, 2023
Common shares outstanding			52,487,862				50,895,235
New creditor warrants (strike price $0.001 per common share)			76,175				81,244
GulfMark creditor warrants (strike price $0.01 per common share)			81,179				100,179
Restricted stock units and stock options			689,806				1,520,226
Total			53,335,022				52,596,884

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-1

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-Topic 830
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-Section 45
-Paragraph 20
-Publisher FASB
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