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Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The changes in accumulated other comprehensive loss by component were as follows:
| Three months ended June 30, | Six months ended June 30,
| 2019 | 2018 | 2019 | 2018
Foreign currency translation |  |  |  |
Balance at beginning of period | $ | (1,181 | ) | $ | (353 | ) | $ | (1,285 | ) | $ | (768 | )
Other comprehensive loss: |  |  |  |
Foreign currency translation adjustments (1) | (43 | ) | (596 | ) | 61 |  | (181 | )
Balance at end of period | $ | (1,224 | ) | $ | (949 | ) | $ | (1,224 | ) | $ | (949 | )
Available-for-sale marketable securities |  |  |  |
Balance at beginning of period | $ | — |  | $ | 3 |  | $ | — |  | $ | 4 |
Other comprehensive income: |  |  |  |
Net unrealized holding loss (2) | — |  | (3 | ) | — |  | (4 | )
Balance at end of period | $ | — |  | $ | — |  | $ | — |  | $ | — |
Total accumulated other comprehensive loss | $ | (1,224 | ) | $ | (949 | ) | $ | (1,224 | ) | $ | (949 | )
(1) | In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings.
(2) | In all periods presented, there were no realized holding gains or losses and therefore no amounts were reclassified to earnings.

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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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