Other Comprehensive Income (Loss) - Summary of Tax Effects on Each Component of OCI (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Feb. 29, 2020	Nov. 30, 2019	Aug. 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	Feb. 29, 2020	Feb. 28, 2019
Components Of Other Comprehensive Income Loss [Abstract]
Foreign currency translation, before tax	$ (576)			$ 1,476			$ 10,868	$ (8,857)
Foreign currency translation, net of tax	(576)			1,476			10,868	(8,857)
Pension liability adjustment, before tax	176			48			1,597	48
Pension liability adjustment, tax	(38)			(11)			(351)	(108)
Pension liability adjustment, net of tax	138			37			1,246	(60)
Cash flow hedges, before tax	2,799			(844)			3,490	(9,437)
Cash flow hedges, tax	(640)			248			(757)	2,209
Cash flow hedges, net of tax	2,159			(596)			2,733	(7,228)
Other comprehensive loss, before tax	2,399			680			15,955	(18,246)
Other comprehensive loss, tax	(678)			237			(1,108)	2,101
Other comprehensive income (loss)	$ 1,721	$ 9,970	$ 3,156	$ 917	$ (11,300)	$ (5,762)	$ 14,847	$ (16,145)

Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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