CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated other comprehensive loss	Retained Earnings (Accumulated Deficit)
Balance, shares at May. 31, 2022		27,120
Balance, amount at May. 31, 2022	$ 50,989	$ 271	$ 117,686	$ (105)	$ (66,863)
Issuance of common stock under employee plans, shares		422
Issuance of common stock under employee plans, amount	455	$ 4	451	0	0
Shares repurchased for tax withholdings on vesting of restricted stock units, shares		(147)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(1,179)	$ (1)	(1,178)	0	0
Stock-based compensation	709	0	709	0	0
Net income	589	0	0	0	589
Foreign currency translation adjustment	(45)	$ 0	0	(45)	0
Balance, shares at Aug. 31, 2022		27,395
Balance, amount at Aug. 31, 2022	51,518	$ 274	117,668	(150)	(66,274)
Balance, shares at May. 31, 2023		28,539
Balance, amount at May. 31, 2023	75,600	$ 285	127,776	(155)	(52,306)
Issuance of common stock under employee plans, shares		247
Issuance of common stock under employee plans, amount	318	$ 3	315	0	0
Shares repurchased for tax withholdings on vesting of restricted stock units, shares		(23)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(1,012)	$ 0	(1,012)	0	0
Stock-based compensation	551	0	551	0	0
Net income	4,674	0	0	0	4,674
Foreign currency translation adjustment	(3)	0	0	(3)	0
Net unrealized gains on investments	17	$ 0	0	17	0
Balance, shares at Aug. 31, 2023		28,763
Balance, amount at Aug. 31, 2023	$ 80,145	$ 288	$ 127,630	$ (141)	$ (47,632)