Note 11 - Income Taxes - Uncertain Tax Benefits (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Uncertain tax benefit, tax | $ 13,200 | |
| Uncertain tax benefit, interest and penalties | 26,800 | |
| Gross decreases - tax positions in prior period | (13,200) | |
| Gross decreases - tax positions in prior period | (26,800) | |
| Uncertain tax benefit, tax | ||
| Uncertain tax benefit, interest and penalties | ||
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits interest and penalties resulting from tax positions taken in prior period tax returns. No definition available.
|
| X | ||||||||||
- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|