Note 2 - Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2019 |
Jan. 01, 2019 |
Dec. 31, 2018 |
Jan. 01, 2018 |
|
| Operating Lease, Right-of-Use Asset | $ 1,376 | $ 1,570 | ||
| Operating Lease, Liability, Total | $ 1,532 | 1,647 | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | 10 years | |||
| Accounting Standards Update 2016-02 [Member] | ||||
| Landlord Inducements | $ (78) |
| X | ||||||||||
- Definition Landlord inducements made. No definition available.
|
| 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 | ||||||||||
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|