Note 6 - Stockholders' Equity and Dilutive Equity Instruments (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

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

(In Thousands)	Three Months Ended
	June 30, 2022			June 30, 2021
Balance at March 31, 2022 and 2021	$	2,471		$	(875	)
Unrealized loss on note receivable		(846	)		—
Pension benefits recognized in OCI		138			(207	)
Balance at June 30, 2022 and 2021	$	1,763		$	(1,082	)

(In Thousands)	Six Months Ended
	June 30, 2022			June 30, 2021
Balance at December 31, 2021 and 2020	$	2,668		$	(804	)
Unrealized loss on note receivable		(846	)		—
Pension benefits recognized in OCI		(59	)		(278	)
Balance at June 30, 2022 and 2021	$	1,763		$	(1,082	)

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, 2022		June 30, 2021
Common shares outstanding		42,029,882		41,000,575
New creditor warrants (strike price $0.001 per common share)		395,401		639,354
GulfMark creditor warrants (strike price $0.01 per common share)		309,351		669,601
SPO acquisition warrants (strike price $0.001 per common share) (A)		8,100,000		—
Restricted stock units and stock options		1,627,083		1,623,635
Total		52,461,717		43,933,165