Note 6 - Deposits - Deposits (Details) - USD ($) $ in Thousands |
Mar. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Advances to vendors - current | $ 195 | $ 88 |
| X | ||||||||||
- Definition Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment within one year or during the operating cycle, if shorter. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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