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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - UNAUDITED - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2022 | Jan. 31, 2021 | Jan. 31, 2022 | Jan. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - UNAUDITED [Abstract] |  |  |  |
Net income | $ 35,366 | $ 22,161 | $ 105,163 | $ 106,927
Other comprehensive (loss) income: |  |  |  |
Foreign currency translation adjustment | (15,918) | 48,305 | (31,338) | 83,532
Unamortized retirement credits (costs), net of tax (expense) benefit of $(1,328), $1,912, $(2,954), and $2,621, respectively | 4,688 | (6,774) | 10,342 | (9,036)
Unrealized gain on interest rate swaps, net of tax (expense) of $(678), $(184), $(1,453) and $(436), respectively | 2,000 | 582 | 4,347 | 1,472
Total other comprehensive (loss) income | (9,230) | 42,113 | (16,649) | 75,968
Comprehensive income | $ 26,136 | $ 64,274 | $ 88,514 | $ 182,895

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