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

6 Months Ended

Jun. 30, 2021

Notes Tables

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

		Three Months Ended
		June 30,				June 30,
(In thousands)		2021				2020
Balance at March 31, 2021 and 2020		$	(875	)		$	133
Pension benefits recognized in OCI			(207	)			448
Balance at June 30, 2021 and 2020		$	(1,082	)		$	581

		Six Months Ended
		June 30,				June 30,
(In thousands)		2021				2020
Balance at December 31, 2020 and 2019		$	(804	)		$	(236	)
Pension benefits recognized in OCI			(278	)			817
Balance at June 30, 2021 and 2020		$	(1,082	)		$	581

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, 2021				June 30, 2020
Common shares outstanding			41,000,575				40,335,963
New creditor warrants (strike price $0.001 per common share)			639,354				817,742
GulfMark creditor warrants (strike price $0.01 per common share)			669,601				952,154
Restricted stock units and stock options			1,623,635				632,345
Total			43,933,165				42,738,204

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