Note 5 - Investment in Unconsolidated Affiliates (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Amounts Due From Affiliate [Table Text Block]

(In Thousands)	Year Ended December 31,
	2023		2022			2021
Due from Sonatide at beginning of year	$	—	$	49,011		$	41,623
Revenue earned by the company through Sonatide		—		—			41,775
Less amounts received from Sonatide		—		—			(26,429	)
Less amounts used to offset Due to Sonatide obligations (A)		—		—			(8,530	)
Less impairment of due from affiliate		—		—			(400	)
Write off of due from affiliate in connection with the acquisition		—		(49,011	)		—
Other		—		—			972
	$	—	$	—		$	49,011

Schedule of Amoutns Due to Affiliate [Table Text Block]

(In Thousands)	Year Ended December 31,
	2023		2022			2021
Due to Sonatide at beginning of year	$	—	$	40,432		$	32,767
Plus commissions payable to Sonatide		—		—			3,832
Plus amounts paid by Sonatide on behalf of the company		—		—			10,914
Less amounts used to offset Due from Sonatide obligations (A)		—		—			(8,530	)
Write off of due to affiliate in connection with the acquisition		—		(40,432	)		—
Other		—		—			1,449
	$	—	$	—		$	40,432