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Note 12 - Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2019
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Three months ended March 3 1 , 201 9 (unaudited) |  |  | Three months ended March 3 1 , 201 8 (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 |  | $ | (1,046 | ) |  | $ | (68 | ) |  | $ | (1,114 | ) |  | $ | (586 | ) |  | $ | — |  |  | $ | (586 | )
Other comprehensive income (loss) before reclassifications |  |  | 552 |  |  |  | 181 |  |  |  | 733 |  |  |  | (595 | ) |  |  | (21 | ) |  |  | (616 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | 18 |  |  |  | (64 | ) |  |  | (46 | ) |  |  | (3 | ) |  |  | 17 |  |  |  | 14 |
Net current period other comprehensive income (loss) |  |  | 570 |  |  |  | 117 |  |  |  | 687 |  |  |  | (598 | ) |  |  | (4 | ) |  |  | (602 | )
Ending balance |  | $ | (476 | ) |  | $ | 49 |  |  | $ | (427 | ) |  | $ | (1,184 | ) |  | $ | (4 | ) |  | $ | (1,188 | )
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 3 1 , |  |  |
|  | 201 9 ( unaudited) |  |  | 201 8 ( unaudited) |  |  |
Unrealized gains (losses) on cash flow hedges |  | $ | 2 |  |  | $ | (1 | ) |  | Cost of revenues
|  |  | 64 |  |  |  | (16 | ) |  | Research and development
|  |  | 2 |  |  |  | (1 | ) |  | Sales and marketing
|  |  | 5 |  |  |  | (1 | ) |  | General and administrative
|  |  | 73 |  |  |  | (19 | ) |  | Total, before income taxes
|  |  | 9 |  |  |  | (2 | ) |  | Income tax expense (benefit)
|  |  | 64 |  |  |  | (17 | ) |  | Total, net of income taxes
Unrealized gains (losses) on available-for-sale marketable securities |  |  | (24 | ) |  |  | 4 |  |  | Financial income (loss), net
|  |  | (6 | ) |  |  | 1 |  |  | Income tax expense (benefit)
|  |  | (18 | ) |  |  | 3 |  |  | Total, net of income taxes
|  | $ | 46 |  |  | $ | (14 | ) |  | Total, net of income taxes

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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