Note 8 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

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

	2020			2019
	(in thousands)
Federal income tax benefit at statutory rate	$	(547	)	$	(1,127	)
Adjusted for:
Valuation allowance		475			6,111
Permanent differences and other		72			15
Income tax expense	$	-		$	4,999

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

	2020			2019
	(in thousands)
Net operating loss and tax credit carryforwards	$	24,956		$	29,545
Joint venture and other investments		(27	)		(27	)
Accrued retirement benefits		3,329			3,010
Property net book value		3,357			3,300
Deferred revenue		715			697
Reserves and other		29			(10	)
Total deferred tax assets		32,359			36,515
Valuation allowance		(32,359	)		(36,515	)
Net deferred tax assets	$	-		$	-