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

12 Months Ended

Dec. 31, 2021

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)
2021:
General and administrative expense	$	2,463		$	1,991		$	1,564		$	1,135
Operating loss		(2,463	)		(1,991	)		(1,564	)		(1,135	)
Other income (loss), net		706			6,733			20,588			(5,992	)
Interest income		53			74			70			79
Equity income (loss), net		19,329			(5,136	)		(761	)		(1,586	)
Net loss before income taxes		17,625			(320	)		18,333			(8,634	)
Income tax benefit (expense)		—			—			—			—
Net loss	$	17,625		$	(320	)	$	18,333		$	(8,634	)
Net loss per share (a)
Basic	$	0.84		$	(0.02	)	$	0.88		$	(0.51	)
Diluted	$	0.84		$	(0.02	)	$	0.88		$	(0.51	)
2020:
General and administrative expense	$	3,532		$	2,028		$	2,275		$	1,631
Operating loss		(3,532	)		(2,028	)		(2,275	)		(1,631	)
Other income (loss), net		(3,567	)		(2,658	)		(820	)		(663	)
Interest income		105			52			52			52
Equity income (loss), net		(9,014	)		(5,277	)		(1,300	)		(5,111	)
Net income (loss) before income taxes		(16,008	)		(9,911	)		(4,343	)		(7,353	)
Income tax benefit (expense)		—			—			—			—
Net income (loss)	$	(16,008	)	$	(9,911	)	$	(4,343	)	$	(7,353	)
Net income (loss) per share (a)
Basic	$	(0.77	)	$	(0.48	)	$	(0.21	)	$	(0.35	)
Diluted	$	(0.77	)	$	(0.48	)	$	(0.21	)	$	(0.35	)