Note 7 - Convertible Note Payable (Details Textual) - USD ($) |
9 Months Ended | ||
|---|---|---|---|
Jan. 24, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
| Repayments of Convertible Debt | $ (0) | $ 6,651,000 | |
| Amortization of Debt Issuance Costs | $ 27,000 | $ 47,000 | |
| Interstate Battery, Convertible Note, Due January 2019 [Member] | |||
| Repayments of Convertible Debt | $ 6,700,000 | ||
| Amortization of Debt Discount (Premium) | 2,600,000 | ||
| Amortization of Debt Issuance Costs | $ 20,000 | ||
| X | ||||||||||
- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of amortization expense attributable to debt issuance costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|