Note 6 - Bank line of credit (Details) - Line of Credit [Member] - USD ($) |
Jan. 17, 2014 |
Apr. 28, 2014 |
|---|---|---|
| Note 6 - Bank line of credit (Details) [Line Items] | ||
| Line of Credit Facility, Maximum Borrowing Capacity | $ 700,000 | $ 900,000 |
| Line of Credit Facility, Expiration Date | Jan. 16, 2015 | |
| Line of Credit Facility, Collateral | The agreement was secured by inventory, work in process, accounts receivable, a letter of credit, and was personally guaranteed by the Company’s Chief Executive Officer/President. | |
| Line of Credit Facility, Interest Rate at Period End | 6.00% |