Note 12 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	2023			2022
	(in thousands)
Federal income tax expense (benefit) at statutory rate	$	(647	)	$	375
Adjusted for:
Permanent differences		99			86
Valuation allowance		548			(461	)
Income tax expense (benefit)	$	-		$	-

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2023			2022
	(in thousands)
Net operating loss and tax credit carryforwards	$	24,648		$	23,980
Joint venture and other investments		(446	)		(27	)
Accrued retirement benefits and other compensation		1,233			1,149
Property net book value		3,002			2,960
Deferred revenue		962			1,016
Reserves and other		37			(50	)
Total deferred tax assets		29,436			29,028
Valuation allowance		(29,436	)		(29,028	)
Net deferred tax assets	$	-		$	-