Note 2 - Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Allowance for Doubtful Accounts Receivable	$ 115,000	$ 48,000	$ 23,000
Allowance for Doubtful Accounts Receivable, Write-offs	78,000	29,000	1,300
Asset Impairment Charges	0	0	0
Depreciation	851,980	744,094	671,009
Cost of Goods Sold, Depreciation	784,771	728,869	651,237
Depreciation, Nonproduction	67,209	15,225	19,772
Percentage Sales To Distributors	14.40%	25.50%	16.90%
Shipping, Handling and Transportation Costs	668,000	674,000	696,000
Finite-Lived Intangible Asset, Useful Life	1 year
Advertising Expense	97,000	165,000	149,000
Research and Development Expense	$ 178,000	$ 99,000	$ 77,000
Building [Member] | Minimum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Building [Member] | Maximum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Machinery and Equipment [Member] | Minimum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Machinery and Equipment [Member] | Maximum [Member]
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	12 years