Note 8 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

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

	2019			2018
	(in thousands)
Federal income tax benefit at statutory rate	$	(1,127	)	$	(945	)
Adjusted for:
AMT refundable credits		-			(4,999	)
Valuation allowance		6,111			986
Permanent differences and other		15			(41	)
Income tax expense (benefit)	$	4,999		$	(4,999	)

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

	2019			2018
	(in thousands)
Net operating loss and tax credit carryforwards	$	29,545		$	24,239
Joint venture and other investments		(27	)		(27	)
Accrued retirement benefits		3,010			3,055
Property net book value		3,300			2,266
Deferred revenue		697			666
Stock compensation		-			16
Reserves and other		(10	)		189
Total deferred tax assets		36,515			30,404
Valuation allowance		(36,515	)		(30,404	)
Net deferred tax assets	$	-		$	-