Note 4 - Summary of Significant Accounting Policies (Details Textual) - USD ($) |
Sep. 30, 2019 |
Jan. 01, 2019 |
Dec. 31, 2018 |
|---|---|---|---|
| Operating Lease, Liability, Total | $ 171,000 | ||
| Operating Lease, Right-of-Use Asset | $ 165,000 | ||
| Accounting Standards Update 2016-02 [Member] | |||
| Operating Lease, Liability, Total | $ 205,000 | ||
| Operating Lease, Right-of-Use Asset | $ 205,000 |
| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|