Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Aug. 31, 2024	May 31, 2024
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 2,363	$ 2,141
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	41,446,390	40,801,597
Common stock, shares outstanding (in shares)	41,004,249	40,431,597
Treasury stock, shares (in shares)	442,141	370,000