Note 14 - Selected Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Quarterly Financial Information [Table Text Block]

	Three Months Ended
	March 31			June 30			September 30			December 31
	(In thousands, except per share data)
2023:
General and administrative expense	$	1,185		$	1,186		$	1,313		$	1,999
Operating loss		(1,185	)		(1,186	)		(1,313	)		(1,999	)
Other income (loss), net		(9	)		(166	)		1,661			551
Interest income		274			249			198			182
Equity income (loss), net		(2,564	)		(1,759	)		386			(3,148	)
Net income (loss) before income taxes		(3,484	)		(2,862	)		932			(4,414	)
Income tax benefit (expense)		—			—			—			—
Net income (loss)	$	(3,484	)	$	(2,862	)	$	932		$	(4,414	)
Net income (loss) per share (a)
Basic	$	(0.22	)	$	(0.18	)	$	0.06		$	(0.27	)
Diluted	$	(0.22	)	$	(0.18	)	$	0.06		$	(0.27	)
2022:
General and administrative expense	$	1,234		$	1,146		$	1,360		$	1,035
Operating loss		(1,234	)		(1,146	)		(1,360	)		(1,035	)
Other income (loss), net		(1,997	)		30			(1,012	)		(318	)
Interest income		101			145			230			318
Equity income (loss), net		(3,579	)		1,454			(1,022	)		(3,838	)
Net income (loss) before income taxes		(6,709	)		483			(3,164	)		(4,873	)
Income tax benefit (expense)		—			—			—			—
Net income (loss)	$	(6,709	)	$	483		$	(3,164	)	$	(4,873	)
Net income (loss) per share (a)
Basic	$	(0.40	)	$	0.03		$	(0.19	)	$	(0.30	)
Diluted	$	(0.40	)	$	0.03		$	(0.19	)	$	(0.30	)