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

9 Months Ended

Sep. 30, 2025

Notes Tables

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

(In Thousands)		Three Months Ended
		September 30, 2025				September 30, 2024
Balance at June 30, 2025 and 2024		$	7,273			$	5,062
Unrealized gain on note receivable			—				130
Pension benefits recognized in OCI			621				(600	)
Balance at September 30, 2025 and 2024		$	7,894			$	4,592

(In Thousands)		Nine Months Ended
		September 30, 2025				September 30, 2024
Balance at December 31, 2024 and 2023		$	6,060			$	5,266
Unrealized gain on note receivable			—				283
Pension benefits recognized in OCI			1,834				(957	)
Balance at September 30, 2025 and 2024		$	7,894			$	4,592

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

Total shares outstanding including warrants and restricted stock units		September 30, 2025				September 30, 2024
Common shares outstanding			49,562,017				52,322,461
New creditor warrants (strike price $0.001 per common share)			21,400				76,175
GulfMark creditor warrants (strike price $0.01 per common share)			53,555				77,313
Restricted stock units			600,759				695,576
Total			50,237,731				53,171,525

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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-SubTopic 10
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 830
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-Name Accounting Standards Codification
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