Note 9 - Notes Payable	12 Months Ended
Dec. 31, 2012
Debt Disclosure [Text Block]	9. Notes Payable The Company maintains a credit facility with Wells Fargo Bank that expires in May 2014. Pursuant to the terms of the credit facility, the Company has a line of credit for up to $3,500,000 based on eligible accounts receivable and inventories. The Company’s borrowing capacity on the line of credit was $3,500,000 as of December 31, 2012. The credit facility bears interest at prime plus 0.5% (prime rate was 3.25% as of December 31, 2012 and 2011) and is collateralized by accounts receivable, inventories, trademarks, patents and property and equipment. Under the terms of the facility, the Company pays a 0.6% unused loan fee, which is paid quarterly. As of December 31, 2012, the Company had no outstanding balance on the line of credit and no other debt.

Note 9 - Notes Payable

12 Months Ended

Dec. 31, 2012

9. Notes Payable

The Company maintains a credit facility with Wells Fargo Bank that expires in May 2014. Pursuant to the terms of the credit facility, the Company has a line of credit for up to $3,500,000 based on eligible accounts receivable and inventories. The Company’s borrowing capacity on the line of credit was $3,500,000 as of December 31, 2012. The credit facility bears interest at prime plus 0.5% (prime rate was 3.25% as of December 31, 2012 and 2011) and is collateralized by accounts receivable, inventories, trademarks, patents and property and equipment. Under the terms of the facility, the Company pays a 0.6% unused loan fee, which is paid quarterly.

As of December 31, 2012, the Company had no outstanding balance on the line of credit and no other debt.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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