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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Abstract] |
Summary of components of other comprehensive income | The cumulative balance of each component of other comprehensive income (loss) and the income tax effects allocated to each component are as follows:
|  | Pension and other post- retirement actuarial items |  |  | Currency translation adjustment |  |  | Unrealized gain (loss) on available-for-sale securities |  |  | Total |
Balance at January 1, 2018 |  | $ | (69,041 | ) |  | $ | 92,954 |  |  | $ | 1,801 |  |  | $ | 25,714 |
Cumulative effect of accounting for adoption of ASU 2016-01 |  |  | - |  |  |  | - |  |  |  | (1,801 | ) |  |  | (1,801 | )
Other comprehensive income before reclassifications |  |  | 5,617 |  |  |  | (41,454 | ) |  |  | - |  |  | $ | (35,837 | )
Tax effect |  |  | (1,032 | ) |  |  | - |  |  |  | - |  |  | $ | (1,032 | )
Other comprehensive income before reclassifications, net of tax |  |  | 4,585 |  |  |  | (41,454 | ) |  |  | - |  |  | $ | (36,869 | )
Amounts reclassified out of AOCI |  |  | 8,343 |  |  |  | - |  |  |  | - |  |  | $ | 8,343 |
Tax effect |  |  | (2,178 | ) |  |  | - |  |  |  | - |  |  | $ | (2,178 | )
Amounts reclassified out of AOCI, net of tax |  |  | 6,165 |  |  |  | - |  |  |  | - |  |  | $ | 6,165 |
Net comprehensive income (loss) |  | $ | 10,750 |  |  | $ | (41,454 | ) |  | $ | - |  |  | $ | (30,704 | )
Balance at December 31, 2018 |  | $ | (58,291 | ) |  | $ | 51,500 |  |  | $ | - |  |  | $ | (6,791 | )
Other comprehensive income before reclassifications |  |  | (21,473 | ) |  |  | (10,126 | ) |  |  | - |  |  | $ | (31,599 | )
Tax effect |  |  | 5,219 |  |  |  | - |  |  |  | - |  |  | $ | 5,219 |
Other comprehensive income before reclassifications, net of tax |  |  | (16,254 | ) |  |  | (10,126 | ) |  |  | - |  |  | $ | (26,380 | )
Amounts reclassified out of AOCI |  |  | 8,694 |  |  |  | - |  |  |  | - |  |  | $ | 8,694 |
Tax effect |  |  | (2,169 | ) |  |  | - |  |  |  | - |  |  | $ | (2,169 | )
Amounts reclassified out of AOCI, net of tax |  |  | 6,525 |  |  |  | - |  |  |  | - |  |  | $ | 6,525 |
Net comprehensive income (loss) |  | $ | (9,729 | ) |  | $ | (10,126 | ) |  | $ | - |  |  | $ | (19,855 | )
Balance at December 31, 2019 |  | $ | (68,020 | ) |  | $ | 41,374 |  |  | $ | - |  |  | $ | (26,646 | )
Other comprehensive income before reclassifications |  |  | (22,055 | ) |  |  | 49,260 |  |  |  | - |  |  | $ | 27,205 |
Tax effect |  |  | 5,288 |  |  |  | - |  |  |  | - |  |  | $ | 5,288 |
Other comprehensive income before reclassifications, net of tax |  |  | (16,767 | ) |  |  | 49,260 |  |  |  | - |  |  | $ | 32,493 |
Amounts reclassified out of AOCI |  |  | 10,168 |  |  |  | - |  |  |  | - |  |  | $ | 10,168 |
Tax effect |  |  | (2,456 | ) |  |  | - |  |  |  | - |  |  | $ | (2,456 | )
Amounts reclassified out of AOCI, net of tax |  |  | 7,712 |  |  |  | - |  |  |  | - |  |  | $ | 7,712 |
Net comprehensive income (loss) |  | $ | (9,055 | ) |  | $ | 49,260 |  |  | $ | - |  |  | $ | 40,205 |
Balance at December 31, 2020 |  | $ | (77,075 | ) |  | $ | 90,634 |  |  | $ | - |  |  | $ | 13,559 |

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