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Note 8 - Other Current Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Other Current Assets [Table Text Block] |
|  | December 31, |
|  | 2020 |  |  | 2019 |
Prepaid expenses |  | $ | 911 |  |  | $ | 835 |
Contract assets |  |  | 1,240 |  |  |  | 906 |
Other |  |  | 1,797 |  |  |  | 2,541 |
Total |  | $ | 3,948 |  |  | $ | 4,282 |

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