Note 2 - Significant Accounting Policies (Detail) (USD $)	9 Months Ended	12 Months Ended				24 Months Ended
	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2012
Foreign Currency Transaction Gain (Loss), Realized		$ 26,000	$ (200)	$ (187,000)
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)		125,600	90,600	90,600		125,600
Amortization of Intangible Assets		41,759	44,933		76,421
Weighted Average Amortization Period			15 years
Finite-Lived Intangible Assets, Amortization Expense, Next Five Years	5
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)		12,000	12,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term		4 years 302 days	5 years 54 days
Allocated Share-based Compensation Expense		10,000	33,000	42,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized		0				0
Proceeds from Stock Options Exercised		20,980		170,266
Shipping, Handling and Transportation Costs		1,767,000	1,725,000	1,603,000
Capitalized Costs		181,000	145,000			181,000
Advertising Expense			$ 2,972,000	$ 3,002,000		$ 3,543,000
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		5 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		10 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		5 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		7 years
Vehicles [Member]
Property, Plant and Equipment, Useful Life		5 years
Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life		40 years
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)			12,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term				6 years
Minimum [Member]
Amortization Of Capitalized Costs Period		12 months
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			10 years
Amortization Of Capitalized Costs Period		18 months