Note 11 - Income Tax Reconciliation (Details) - USD ($)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Income taxes based on US statutory rate of 34%	$ 518,000	$ 1,340,000
Non-deductible meals and entertainment	7,000	5,000
Domestic manufacturer's deduction	(18,000)	(41,000)
Foreign taxes	(11,000)	(102,000)
State taxes	75,000	88,000
Other	(91,000)	(89,000)
	$ 480,000	$ 1,201,000

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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