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Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Summary of Other Comprehensive Income (Loss) | The other comprehensive income (loss) consists of the following components:
| Three Months Ended March 31
| 2023 |  | 2022
| Before-Tax |  | Income |  | After-Tax |  | Before-Tax |  | Income |  | After-Tax
(in thousands) | Amount |  | Tax |  | Amount |  | Amount |  | Tax |  | Amount
Foreign currency translation adjustments: |  |  |  |  |  |  |  |  |  |  |
Translation adjustments arising during the period | $ | 8,994 |  |  | $ | — |  |  | $ | 8,994 |  |  | $ | (1,738) |  |  | $ | — |  |  | $ | (1,738) |
Pension and other postretirement plans: |  |  |  |  |  |  |  |  |  |  |
Amortization of net prior service cost included in net income | 409 |  |  | (105) |  |  | 304 |  |  | 716 |  |  | (184) |  |  | 532 |
Amortization of net actuarial gain included in net income | (10,766) |  |  | 2,769 |  |  | (7,997) |  |  | (17,774) |  |  | 4,581 |  |  | (13,193) |
| (10,357) |  |  | 2,664 |  |  | (7,693) |  |  | (17,058) |  |  | 4,397 |  |  | (12,661) |
Cash flow hedges: |  |  |  |  |  |  |  |  |  |  |
(Loss) gain for the period | (930) |  |  | 214 |  |  | (716) |  |  | 1,642 |  |  | (378) |  |  | 1,264 |
Other Comprehensive Income (Loss) | $ | (2,293) |  |  | $ | 2,878 |  |  | $ | 585 |  |  | $ | (17,154) |  |  | $ | 4,019 |  |  | $ | (13,135) |
Summary of Changes in Accumulated Other Comprehensive Income (Loss) | The accumulated balances related to each component of other comprehensive income (loss) are as follows:
(in thousands, net of taxes) | Cumulative Foreign Currency Translation Adjustment |  |  |  | Unrealized Gain on Pensions and Other Postretirement Plans |  | Cash Flow Hedges |  | Accumulated Other Comprehensive Income
Balance as of December 31, 2022 | $ | (54,638) |  |  |  |  | $ | 388,591 |  |  | $ | 2,198 |  |  | $ | 336,151 |
Other comprehensive income (loss) before reclassifications | 8,994 |  |  |  |  | — |  |  | (542) |  |  | 8,452 |
Net amount reclassified from accumulated other comprehensive income | — |  |  |  |  | (7,693) |  |  | (174) |  |  | (7,867) |
Net other comprehensive income (loss) | 8,994 |  |  |  |  | (7,693) |  |  | (716) |  |  | 585 |
Balance as of March 31, 2023 | $ | (45,644) |  |  |  |  | $ | 380,898 |  |  | $ | 1,482 |  |  | $ | 336,736 |
Summary of Amounts and Line Items of Reclassifications Out of Accumulated Other Comprehensive Income (Loss) | The amounts and line items of reclassifications out of Accumulated Other Comprehensive Income (Loss) are as follows:
|  |  | Three Months Ended March 31 |  | Affected Line Item in the Condensed Consolidated Statements of Operations
(in thousands) |  |  |  |  | 2023 |  | 2022 |
Pension and Other Postretirement Plans: |  |  |  |  |  |  |  |  |
Amortization of net prior service cost |  |  |  |  | $ | 409 |  |  | $ | 716 |  |  | (1)
Amortization of net actuarial gain |  |  |  |  | (10,766) |  |  | (17,774) |  |  | (1)
|  |  |  |  | (10,357) |  |  | (17,058) |  |  | Before tax
|  |  |  |  | 2,664 |  |  | 4,397 |  |  | Provision for Income Taxes
|  |  |  |  | (7,693) |  |  | (12,661) |  |  | Net of Tax
Cash Flow Hedges |  |  |  |  | (174) |  |  | 184 |  |  | Interest expense
Total reclassification for the period |  |  |  |  | $ | (7,867) |  |  | $ | (12,477) |  |  | Net of Tax
____________ (1) These accumulated other comprehensive income components are included in the computation of net periodic pension and postretirement plan cost (see Note 11) and are included in non-operating pension and postretirement benefit income in the Company’s Condensed Consolidated Statements of Operations.

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e526-108580 + Details
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