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Note 9 - Notes Payable | 12 Months Ended
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Dec. 31, 2019
Notes to Financial Statements |
Debt Disclosure [Text Block] | 9. Notes Payable The Company maintains a credit facility with Wells Fargo Bank that expires in May 2020. Pursuant to the terms of the credit facility, the Company has a borrowing capacity up to $3,500,000 based on eligible accounts receivable and inventories. The credit facility bears interest at prime plus 0.5% (prime rate was 4.75% and 5.50% as of December 31, 2019 and 2018, respectively) and is collateralized by accounts receivable, inventories, trademarks, patents and property and equipment. Under the terms of the facility, the Company pays a 0.5% unused loan fee on a quarterly basis. As of December 31, 2019, the Company had no outstanding borrowings on its line of credit and no other debt.

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- 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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