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Note 12 - Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 30, 2019
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Six months ended June 3 0 , 201 9 (unaudited) |  |  | Three months ended June 3 0 , 201 9 (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 h edges |  |  | Total |
Beginning balance |  | $ | (1,046 | ) |  | $ | (68 | ) |  | $ | (1,114 | ) |  | $ | (476 | ) |  | $ | 49 |  |  | $ | (427 | )
Other comprehensive income (loss) before reclassifications |  |  | 1,037 |  |  |  | 280 |  |  |  | 1,317 |  |  |  | 485 |  |  |  | 99 |  |  |  | 584 |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | 26 |  |  |  | (165 | ) |  |  | (139 | ) |  |  | 8 |  |  |  | (101 | ) |  |  | (93 | )
Net current period other comprehensive income (loss) |  |  | 1,063 |  |  |  | 115 |  |  |  | 1,178 |  |  |  | 493 |  |  |  | (2 | ) |  |  | 491 |
Ending balance |  | $ | 17 |  |  | $ | 47 |  |  | $ | 64 |  |  | $ | 17 |  |  | $ | 47 |  |  | $ | 64 |
|  | Six months ended June 3 0 , 201 8 (unaudited) |  |  | Three months ended June 3 0 , 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 h edges |  |  | Total |
Beginning balance |  | $ | (586 | ) |  | $ | — |  |  | $ | (586 | ) |  | $ | (1,184 | ) |  | $ | (4 | ) |  | $ | (1,188 | )
Other comprehensive loss before reclassifications |  |  | (754 | ) |  |  | (250 | ) |  |  | (1,004 | ) |  |  | (159 | ) |  |  | (229 | ) |  |  | (388 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | (2 | ) |  |  | 175 |  |  |  | 173 |  |  |  | 1 |  |  |  | 158 |  |  |  | 159 |
Net current period other comprehensive loss |  |  | (756 | ) |  |  | (75 | ) |  |  | (831 | ) |  |  | (158 | ) |  |  | (71 | ) |  |  | (229 | )
Ending balance |  | $ | (1,342 | ) |  | $ | (75 | ) |  | $ | (1,417 | ) |  | $ | (1,342 | ) |  | $ | (75 | ) |  | $ | (1,417 | )
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)
|  | Six months ended June 3 0 , |  |  | Three months ended June 3 0 , |  |
|  | 201 9 ( unaudited) |  |  | 201 8 ( unaudited) |  |  | 201 9 ( unaudited) |  |  | 201 8 ( unaudited) |  |
Unrealized gains (losses) on cash flow hedges |  | $ | 4 |  |  | $ | (4 | ) |  | $ | 2 |  |  | $ | (3 | ) | Cost of revenues
|  |  | 165 |  |  |  | (170 | ) |  |  | 101 |  |  |  | (154 | ) | Research and development
|  |  | 5 |  |  |  | (7 | ) |  |  | 3 |  |  |  | (6 | ) | Sales and marketing
|  |  | 13 |  |  |  | (15 | ) |  |  | 8 |  |  |  | (14 | ) | General and administrative
|  |  | 187 |  |  |  | (196 | ) |  |  | 114 |  |  |  | (177 | ) | Total, before income taxes
|  |  | 22 |  |  |  | (21 | ) |  |  | 13 |  |  |  | (19 | ) | Income tax expense (benefit)
|  |  | 165 |  |  |  | (175 | ) |  |  | 101 |  |  |  | (158 | ) | Total, net of income taxes
Unrealized gains (losses) on available-for-sale marketable securities |  |  | (35 | ) |  |  | 2 |  |  |  | (11 | ) |  |  | (2 | ) | Financial income (loss), net
|  |  | (9 | ) |  |  | — |  |  |  | (3 | ) |  |  | (1 | ) | Income tax expense (benefit)
|  |  | (26 | ) |  |  | 2 |  |  |  | (8 | ) |  |  | (1 | ) | Total, net of income taxes
|  | $ | 139 |  |  | $ | (173 | ) |  | $ | 93 |  |  | $ | (159 | ) | 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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