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Retirement Plans, Amounts in Accumulated Other Comprehensive Loss to Be Recognized During Next Fiscal Year (Details) $ in Thousands	Apr. 30, 2019 USD ($)
Amounts in Accumulated Other Comprehensive Loss to be recognized in next fiscal year [Abstract]
Actuarial Loss	$ 6,481
Prior Service Cost	(72)
Total	6,409
U.S. [Member]
Amounts in Accumulated Other Comprehensive Loss to be recognized in next fiscal year [Abstract]
Actuarial Loss	2,390
Prior Service Cost	(154)
Total	2,236
Non-U.S. [Member]
Amounts in Accumulated Other Comprehensive Loss to be recognized in next fiscal year [Abstract]
Actuarial Loss	4,091
Prior Service Cost	82
Total	$ 4,173

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Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

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Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

+ References

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-Publisher FASB
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-Topic 715
-SubTopic 20
-Section 50
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