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ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) | 18. ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) Accumulated other comprehensive income/ (loss) consist of the following (in thousands):
|  | 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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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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