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Accumulated other comprehensive income (loss) (Tables) | 6 Months Ended
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Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Accumulated other comprehensive loss | AOCI consists of the following balances, net of tax:
| Foreign currency cumulative translation |  | Change in fair value of cash flow hedges |  |  | Pension and post-employment actuarial changes |  | Total
Balance, January 1, 2018 | $ | (47,701 | ) |  | $ | 55,366 |  |  |  | $ | (10,457 | ) |  | $ | (2,792 | )
Cumulative catch-up adjustments related to adoption of ASU 2018-02 on tax effects in AOCI | — |  |  | 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 | )
Cumulative catch-up adjustment related to adoption of ASU 2017-12 on tax effects in AOCI (note 2(a)) | — |  |  | 186 |  |  |  | — |  |  | 186 |
OCI before reclassifications | 9,250 |  |  | 10,087 |  |  |  | (48 | ) |  | 19,289 |
Amounts reclassified | — |  |  | 3,543 |  |  |  | 3 |  |  | 3,546 |
Net current period OCI | $ | 9,250 |  |  | $ | 13,630 |  |  |  | $ | (45 | ) |  | $ | 22,835 |
Balance, June 30, 2019 | $ | (64,939 | ) |  | $ | 78,149 |  |  |  | $ | (9,574 | ) |  | $ | 3,636 |

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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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