Note 9 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Table Text Block Supplement [Abstract]

Schedule of Effective Income Tax Rate Reconciliation

The actual expense (benefit) differs from the expected tax expense (benefit) as computed by applying the U.S. federal statutory income tax rate of 21 percent for 2019 and 2018, respectively, as follows:

	2019	2018
Income tax provision (benefit) at U.S. federal statutory rate	$ (365)	$ 791
State tax  provision (benefit), net of federal income tax	(155)	116
Change in valuation allowance attributable to operations	(298)	(3,114)
Change in effective tax rate	-	111
Stock compensation	9	30
True-up adjustments and expiration of tax carryforwards and credits	685	2,105
Other, net	(14)	(18)
Income tax expense (benefit)	$ (138)	$ 21

Schedule of Deferred Income Tax Assets and Liabilities

The tax effects of temporary differences that give rise to significant portions of the deferred income tax assets and liabilities as of December 31, 2019 and 2018 are as follows:

	2019	2018
Property and equipment, principally due to differences in depreciation	$ 85	$ 68
Inventory reserves and other inventory-related temporary basis differences	437	437
Warranty, vacation, deferred rent and other liabilities	(446)	251
Retirement liabilities	504	543
Net operating loss carryforwards	35,205	35,532
Credit carryforwards	-	28
Other	956	181
Total deferred income tax	36,741	37,040
Less valuation allowance	(36,741)	(37,040)
Net deferred income tax	$ -	$ -

Schedule of Worldwide Income Before Income Taxes

Worldwide income before income taxes consisted of the following:

	2019	2018
United States	$ (1,738)	$ 3,768
International	-	-
Total	$ (1,738)	$ 3,768

Schedule of Components of Income Tax Expense (Benefit)

Income tax expense (benefit) consisted of the following:

	2019	2018
Current
U.S. federal	$ (28)	$ (1)
State	(110)	22
Total current expense (benefit)	$ (138)	$ 21
Deferred
U.S. federal	$ (297)	$ 1,477
State	595	1,637
Total	298	3,114
Valuation allowance increase	(298)	(3,114)
Total deferred expense (benefit)	-	-
Total income tax expense (benefit)	$ (138)	$ 21