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Note 10 - Other Assets - Summary of Other Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Long term spare parts | $ 494 | $ 183
Long term deposits | 286 | 396
Pension asset | 380 | 607
Deferred tax asset, net | 3,604 | 172
Other | 244 | 171
Total | $ 5,008 | $ 1,529

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