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Note Other comprehensive income (loss) (Disclosure of accumulated other comprehensive income (loss)) (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Foreign Currency Translation |  |  |
Beginning Balance | $ (49,936) | $ (43,034) |
Other comprehensive loss before reclassifications | (1,238) | 93 |
Net change | (1,238) | 93 |
Ending Balance | (51,174) | (42,941) |
Adjustment of pension and postretirement benefit plans |  |  |
Beginning Balance | (203,836) | (205,408) |
Amounts reclassified from accumulated other comprehensive income (loss) for amortization of net losses | 3,673 | 3,285 |
Amounts reclassified from accumulated other comprehensive income (loss) for amortization of prior service credit | 0 | (529) |
Net change | 3,673 | 2,756 |
Ending Balance | (200,163) | (202,652) |
Unrealized net holding losses on debt securities |  |  |
Beginning Balance | (173,811) | (102,775) |
Other comprehensive (loss) income before reclassifications | 101,403 | (114,404) |
Net change | 101,403 | (114,404) |
Ending Balance | (72,408) | (217,179) |
Unrealized holding gains on equity securities |  |  |
Beginning Balance | 0 | 605 |
Reclassification to retained earnings due to cumulative effect of accounting change | 0 | (605) |
Net change | 0 | (605) |
Ending Balance | 0 | 0 |
Unrealized net (losses) gain on cash flow hedges |  |  |
Beginning Balance | (391) | (40) |
Reclassification to retained earnings due to cumulative effect of accounting change | (50) | 0 |
Other comprehensive income (loss) before reclassification | (437) | 747 |
Amounts reclassified from other accumulated other comprehensive income (loss) | 644 | (773) |
Net change | 157 | (26) |
Ending Balance | (234) | (66) |
Accumulated other comprehensive (loss) income | $ (323,979) | $ (462,838) | $ (427,974)

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