CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands		Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)(1)	[1]	Retained Earnings (Deficit)	Treasury Stock
Beginning Balances, (in shares) at Apr. 30, 2020			228,207,000					35,731,000
Beginning Balances, Value at Apr. 30, 2020			$ 2,282	$ 775,387	$ (51,576)		$ 42,965	$ (698,017)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		$ (10,550)					(10,550)
Other comprehensive income (loss)		11,795			11,795
Stock-based compensation		5,110		5,110
Stock-based awards exercised or vested		(174)		(7,554)			(826)	$ 8,206
Stock-based awards exercised or vested (in shares)								419,000
Acquisition of treasury shares (in shares)	[2]							(166,000)
Acquisition of treasury shares(2)	[2]	(2,376)						$ (2,376)
Cash dividends declared - $0.27 per share		(50,044)					(50,044)
Ending Balances, (in shares) at Jun. 30, 2020			228,207,000					35,478,000
Ending Balances, Value at Jun. 30, 2020		$ 24,802	$ 2,282	772,943	(39,781)		(18,455)	$ (692,187)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share (in usd per share)		$ 0.26
Beginning Balances, (in shares) at Apr. 30, 2021			216,656,000					35,190,000
Beginning Balances, Value at Apr. 30, 2021		$ 352,401	$ 2,167	783,292	4,786		248,506	$ (686,350)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		89,610					89,610
Other comprehensive income (loss)		(4,698)			(4,698)
Stock-based compensation		4,285		4,285
Stock-based awards exercised or vested		91		(8,112)			(2,424)	$ 10,627
Stock-based awards exercised or vested (in shares)								545,000
Acquisition of treasury shares (in shares)	[2]							(197,000)
Acquisition of treasury shares(2)	[2]	(4,633)						$ (4,633)
Cash dividends declared - $0.27 per share		(48,998)					(48,998)
Ending Balances, (in shares) at Jun. 30, 2021			216,656,000					34,842,000
Ending Balances, Value at Jun. 30, 2021		$ 388,058	$ 2,167	$ 779,465	$ 88		$ 286,694	$ (680,356)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share (in usd per share)		$ 0.27

[1] The balance of our accumulated other comprehensive income (loss) consists of foreign currency translation adjustments.

[2] Represents shares swapped or surrendered to us in connection with the vesting or exercise of stock-based awards.