Note 8 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

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

	2018			2017
	(in thousands)
Federal income tax expense (credit) at statutory rate	$	(945	)	$	3,815
Adjusted for:
AMT refundable credits		(4,999	)
Valuation allowance		986			(3,814	)
Permanent differences and other		(41	)		(1	)
Income tax benefit	$	(4,999	)	$	-

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

	2018			2017
	(in thousands)
Net operating loss and tax credit carryforwards	$	24,239		$	25,745
Joint venture and other investments		(27	)		(22	)
Accrued retirement benefits		3,055			2,483
Property net book value		2,266			1,716
Deferred revenue		666			546
Stock compensation		16			13
Reserves and other		189			(115	)
Total deferred tax assets		30,404			30,366
Valuation allowance		(30,404	)		(30,366	)
Net deferred tax assets	$	-		$	-