Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Restricted stock units	Performance share units	Common Stock	Common Stock Restricted stock units	Common Stock Performance share units	Additional paid in capital	Additional paid in capital Restricted stock units	Additional paid in capital Performance share units	Accumulated deficit	Accumulated other comprehensive loss	Treasury Stock
Beginning Balance (in shares) at May. 31, 2023				39,981,422,000
Beginning Balance at May. 31, 2023	$ 378,296			$ 382			$ 599,206			$ (210,855)	$ (4,723)	$ (5,714)
Beginning Balance, Treasury Stock (in shares) at May. 31, 2023												(370,000,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	45,884									45,884
Issuance/Cancellation of performance share units and restricted stock units, net (in shares)					386,031,000	87,377,000
Issuance/Cancellation of performance share units and restricted stock units		$ (280)	$ (210)					$ (280)	$ (210)
Purchase of common stock under ESPP (in shares)				131,811,000
Purchases of common stock under ESPP	900			$ 1			899
Stock-based compensation	4,144						4,144
Other comprehensive loss, net of tax	(930)										(930)
Ending Balance (in shares) at Aug. 31, 2023				40,586,641,000
Ending Balance at Aug. 31, 2023	427,804			$ 383			603,759			(164,971)	(5,653)	$ (5,714)
Ending Balance, Treasury Stock (in shares) at Aug. 31, 2023												(370,000,000)
Beginning Balance (in shares) at May. 31, 2024				40,801,597
Beginning Balance at May. 31, 2024	$ 205,586			$ 385			610,484			(395,204)	(4,365)	$ (5,714)
Beginning Balance, Treasury Stock (in shares) at May. 31, 2024	(370,000)											(370,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (12,798)									(12,798)
Issuance/Cancellation of performance share units and restricted stock units, net (in shares)					432,144	60,731
Issuance/Cancellation of performance share units and restricted stock units		$ (321)	$ (347)					$ (321)	$ (347)
Purchase of common stock under ESPP (in shares)				151,918
Purchases of common stock under ESPP	711			$ 2			709
Stock-based compensation	3,205						3,205
Common stock repurchased (in shares)												(72,141)
Common stock repurchased	(552)			$ (1)								$ (551)
Other comprehensive loss, net of tax	1,098										1,098
Ending Balance (in shares) at Aug. 31, 2024				41,446,390
Ending Balance at Aug. 31, 2024	$ 196,582			$ 386			$ 613,730			$ (408,002)	$ (3,267)	$ (6,265)
Ending Balance, Treasury Stock (in shares) at Aug. 31, 2024	(442,141)											(442,141)