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Note 12 - Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2021
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Three months ended March 31, 2021 (unaudited) |  |  | Three months ended March 31, 2020 (unaudited) |
|  | Unrealized gains (losses) on available-for-sale marketable securities |  |  | Unrealized gains (losses) on cash flow hedges |  |  | Total |  |  | Unrealized gains (losses) on available-for-sale marketable securities |  |  | Unrealized gains (losses) on cash flow hedges |  |  | Total |
Beginning balance |  | $ | 478 |  |  | $ | — |  |  | $ | 478 |  |  | $ | 45 |  |  | $ | 49 |  |  | $ | 94 |
Other comprehensive income before reclassifications |  |  | (360 | ) |  |  | (44 | ) |  |  | (404 | ) |  |  | (621 | ) |  |  | 177 |  |  |  | (444 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | — |  |  |  | 19 |  |  |  | 19 |  |  |  | 1 |  |  |  | — |  |  |  | 1 |
Net current period other comprehensive income (loss) |  |  | (360 | ) |  |  | (25 | ) |  |  | (385 | ) |  |  | (620 | ) |  |  | 177 |  |  |  | (443 | )
Ending balance |  | $ | 118 |  |  | $ | (25 | ) |  | $ | 93 |  |  | $ | (575 | ) |  | $ | 226 |  |  | $ | (349 | )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] |
Details about Accumulated Other Comprehensive Income (Loss) Components |  | Amount Reclassified from Accumulated Other Comprehensive Income (Loss) |  |  | Affected Line Item in the Statements of Income (Loss)
|  | Three months ended March 31, |  |  |
|  | 2021 (unaudited) |  |  | 2020 (unaudited) |  |  |
Unrealized gains (losses) on cash flow hedges |  | $ | — |  |  | $ | — |  |  | Cost of revenues
|  |  | (19 | ) |  |  | — |  |  | Research and development
|  |  | (1 | ) |  |  | — |  |  | Sales and marketing
|  |  | (2 | ) |  |  | — |  |  | General and administrative
|  |  | (22 | ) |  |  | — |  |  | Total, before income taxes
|  |  | (3 | ) |  |  | — |  |  | Income tax benefit
|  |  | (19 | ) |  |  | — |  |  | Total, net of income taxes
Unrealized gains (losses) on available-for-sale marketable securities |  |  | — |  |  |  | (2 | ) |  | Financial loss, net
|  |  | — |  |  |  | (1 | ) |  | Income tax benefit
|  |  | — |  |  |  | (1 | ) |  | Total, net of income taxes
|  | $ | (19 | ) |  | $ | (1 | ) |  | Total, net of income taxes

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