Note 6 - Intangibles - Intangibles (Details) - USD ($) |
Apr. 01, 2017 |
Oct. 01, 2016 |
|---|---|---|
| Intangible assets, gross | $ 5,137,811 | $ 5,288,911 |
| Less accumulated amortization | (3,275,514) | (3,299,012) |
| Intangibles, net | 1,862,297 | 1,989,899 |
| Patents and Trademarks [Member] | ||
| Intangible assets, gross | 2,307,428 | 2,268,402 |
| Trade Names [Member] | ||
| Intangible assets, gross | 338,945 | 343,678 |
| Noncompete Agreements [Member] | ||
| Intangible assets, gross | 150,601 | |
| Customer Relationships [Member] | ||
| Intangible assets, gross | $ 2,491,438 | $ 2,526,230 |