Note 6 - Inventories - Components of Inventory (Details) - USD ($) |
Dec. 31, 2017 |
Sep. 30, 2017 |
|---|---|---|
| Raw materials | $ 6,012,095 | $ 5,991,863 |
| Work-in-progress | 431,495 | 724,248 |
| Finished goods | 1,696,794 | 1,737,456 |
| Inventories | $ 8,140,384 | $ 8,453,567 |
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|