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ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) (Tables) | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
Accumulated other comprehensive income/ (loss) | Accumulated other comprehensive income/ (loss) consist of the following (in thousands):
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |
|  | Pension Liability Adjustment |  |  | Foreign Currency Translation |  |  | Interest Rate Swaps |  |  | Total |
Balance at December 31, 2017 |  | $ | (35,041 | ) |  | $ | (10,915 | ) |  | $ | — |  |  | $ | (45,956 | )
Change during 2018: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Before-tax amount |  |  | (14,812 | ) |  |  | (14,072 | ) |  |  | — |  |  |  | (28,884 | )
Tax expense |  |  | 3,762 |  |  |  | — |  |  |  | — |  |  |  | 3,762 |
Other comprehensive earnings/(loss) |  |  | (11,050 | ) |  |  | (14,072 | ) |  |  | — |  |  |  | (25,122 | )
Balance at December 31, 2018 |  |  | (46,091 | ) |  |  | (24,987 | ) |  |  | — |  |  |  | (71,078 | )
Change during 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Before-tax amount |  |  | 75,449 |  |  |  | 4,350 |  |  |  | (277 | ) |  |  | 79,522 |
Tax expense |  |  | (29,553 | ) |  |  | — |  |  |  | — |  |  |  | (29,553 | )
Other comprehensive earnings/(loss) |  |  | 45,896 |  |  |  | 4,350 |  |  |  | (277 | ) |  |  | 49,969 |
Balance at December 31, 2019 |  |  | (195 | ) |  |  | (20,637 | ) |  |  | (277 | ) |  |  | (21,109 | )
Change during 2020: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Before-tax amount |  |  | (173 | ) |  |  | 10,443 |  |  |  | (141 | ) |  |  | 10,129 |
Tax benefit |  |  | 46 |  |  |  | — |  |  |  | 37 |  |  |  | 83 |
Other comprehensive earnings/(loss) |  |  | (127 | ) |  |  | 10,443 |  |  |  | (104 | ) |  |  | 10,212 |
Balance at December 31, 2020 |  | $ | (322 | ) |  | $ | (10,194 | ) |  | $ | (381 | ) |  | $ | (10,897 | )

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