Note 1 - Organization and Nature of Business (Details Textual) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Sep. 30, 2020 |
Jun. 30, 2020 |
Dec. 31, 2020 |
|
| Geographic Concentration Risk [Member] | Product Production [Member] | North America [Member] | |||
| Concentration Risk, Percentage | 75.00% | ||
| Geographic Concentration Risk [Member] | Product Production [Member] | Southeast Asia and China [Member] | |||
| Concentration Risk, Percentage | 25.00% | ||
| Revolving Credit Facility [Member] | The Facility [Member] | |||
| Repayments of Long-term Lines of Credit | $ 50 | $ 50 | $ 50 |