Note 4 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	201 7			201 6
Current:
Federal	$	(10	)	$	525
State		(25	)		193
Total current		(35	)		718
Deferred:
Federal		-			-
State		-			-
Total deferred		-			-
Income tax (benefit) expense	$	(35	)	$	718

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

	201 7			201 6
Federal statutory rate		35.0	%		35.0	%
State tax, net of federal benefit		(12.3	)		(6.1	)
State tax credits and adjustments		(1.7	)		1.8
Change in federal tax rate		(54.6	)		-
Change in cash surrender value of life insurance policies		-			(185.1	)
Valuation allowance increase		38.8			143.2
Other, net		(4.7	)		(4.6	)
Effective income tax rate		0.5	%		(15.8	)%

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

	20 1 7			201 6
Noncurrent deferred tax assets (liabilities) :
Accounts receivable	$	46		$	99
Other accrued expenses		339			587
Property, plant and equipment		(659	)		(1,190	)
Employee benefits		1,970			3,979
Contribution carryforward		-			181
AMT credit		1,192			1,205
Net operating loss		6,733			7,727
Gross non-current deferred tax assets		9,621			12,588
Less valuation allowance		(9,621	)		(12,588	)
Net noncurrent deferred tax assets	$	-		$	-

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	201 7			201 6
Unrecognized tax benefits balance at January 1	$	471		$	307
Gross (decrease) increases in tax positions of prior years		(17	)		164
Unrecognized tax benefits balance at December 31	$	454		$	471