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Accumulated other comprehensive income (loss) (Tables) | 12 Months Ended
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Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Accumulated other comprehensive income (loss) | AOCI consists of the following balances, net of tax:
| Foreign currency cumulative translation |  | Unrealized gain on cash flow hedges |  | Net change on available-for-sale investments |  | Pension and post-employment actuarial changes |  | Total
Balance, January 1, 2017 | $ | (25,921 | ) |  | $ | 53,740 |  |  | $ | 65 |  |  | $ | (10,833 | ) |  | $ | 17,051 |
OCI (loss) before reclassifications | (21,780 | ) |  | 8,004 |  |  | — |  |  | 600 |  |  | (13,176 | )
Amounts reclassified | — |  |  | (6,378 | ) |  | (65 | ) |  | (224 | ) |  | (6,667 | )
Net current period OCI | (21,780 | ) |  | 1,626 |  |  | (65 | ) |  | 376 |  |  | (19,843 | )
Balance, December 31, 2017 | $ | (47,701 | ) |  | $ | 55,366 |  |  | $ | — |  |  | $ | (10,457 | ) |  | $ | (2,792 | )
Cumulative catch-up adjustment related to adoption of ASU 2018-02 on tax effects in AOCI (note 2(a)) | — |  |  | 11,657 |  |  | — |  |  | (1,032 | ) |  | 10,625 |
OCI before reclassifications | (26,488 | ) |  | 1,567 |  |  | — |  |  | 2,046 |  |  | (22,875 | )
Amounts reclassified | — |  |  | (4,257 | ) |  | — |  | — |  | (86 | ) |  | (4,343 | )
Net current period OCI | $ | (26,488 | ) |  | $ | (2,690 | ) |  | $ | — |  |  | $ | 1,960 |  |  | $ | (27,218 | )
Balance, December 31, 2018 | $ | (74,189 | ) |  | $ | 64,333 |  |  | $ | — |  |  | $ | (9,529 | ) |  | $ | (19,385 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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