Note 9 - Notes Payable |
12 Months Ended |
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Dec. 31, 2018 | |
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 2021. 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 5.50% and 4.50% as of December 31, 2018 and 2017, 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, 2018, the Company had no outstanding borrowings on its line of credit and no other debt. |