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

3 Months Ended

Mar. 31, 2022

Notes Tables

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

(In Thousands)		Three Months Ended
		March 31, 2022				March 31, 2021
Balance at December 31, 2021 and 2020		$	2,668			$	(804	)
Pension benefits recognized in OCI			(197	)			(71	)
Balance at March 31, 2022 and 2021		$	2,471			$	(875	)

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		March 31, 2022				March 31, 2021
Common shares outstanding			41,716,885				40,731,777
New creditor warrants (strike price $0.001 per common share)			465,398				657,203
GulfMark creditor warrants (strike price $0.01 per common share)			429,812				815,575
Restricted stock units and stock options			1,736,037				1,698,719
Total			44,348,132				43,903,274

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