Stockholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Accumulated other comprehensive (loss) income [Roll Forward]
Beginning balance	$ 1,064,498	$ 822,462	$ 633,981
Other comprehensive loss before reclassification	(30,864)	(19,678)	61,030
Reclassification to earnings from accumulated other comprehensive income (loss)	1,778	8,876	8,811
Ending balance	1,274,757	1,064,498	822,462
Other comprehensive loss on derivative instruments before reclassification, tax	300	2,000	100
Reclassification to earnings from accumulated other comprehensive income (loss) on derivative instruments	600	2,900	2,800
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive (loss) income [Roll Forward]
Beginning balance	(6,043)	4,759	(65,082)
Ending balance	(35,129)	(6,043)	4,759
Foreign Currency Translation
Accumulated other comprehensive (loss) income [Roll Forward]
Beginning balance	(5,041)	20,764	(40,577)
Other comprehensive loss before reclassification	(30,088)	(25,805)	61,341
Reclassification to earnings from accumulated other comprehensive income (loss)	0	0	0
Ending balance	(35,129)	(5,041)	20,764
Derivative Financial Instruments
Accumulated other comprehensive (loss) income [Roll Forward]
Beginning balance	(1,002)	(16,005)	(24,505)
Other comprehensive loss before reclassification	(776)	6,127	(311)
Reclassification to earnings from accumulated other comprehensive income (loss)	1,778	8,876	8,811
Ending balance	$ 0	$ (1,002)	$ (16,005)