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v3.21.2

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Net income (loss) | $ (3,312) | $ 3,343 | $ 4,230 | $ 9,032
Post-retirement benefit plan adjustments: |  |  |  |
Amortization of net actuarial loss | 43 | 46 | 130 | 136
Amortization of prior service credits | (124) | (124) | (372) | (372)
Income tax benefit | 18 | 17 | 51 | 50
Comprehensive income (loss) | (3,375) | 3,742 | 4,039 | 8,063
Foreign currency hedging derivatives: |  |  |  |
Foreign currency hedging derivatives: |  |  |  |
Unrealized hedge gain (loss) | 0 | 415 | 0 | (456)
Income tax benefit (expense) | 0 | (88) | 0 | 98
Interest rate swaps: |  |  |  |
Foreign currency hedging derivatives: |  |  |  |
Unrealized hedge gain (loss) | 0 | 172 | 0 | (550)
Income tax benefit (expense) | $ 0 | $ (39) | $ 0 | $ 125

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