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		761
Issuance of common stock under employee plans, amount	1,112	$ 7	1,105	0	0
Shares repurchased for tax withholdings on vesting of restricted stock units, shares		(149)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(1,216)	$ (1)	(1,215)	0	0
Stock-based compensation	1,518	0	1,518	0	0
Net income	4,314	0	0	0	4,314
Foreign currency translation adjustment	(44)	0	0	(44)	0
Net unrealized loss on investments	(6)	$ 0	0	(6)	0
Balance, shares at Nov. 30, 2022		27,732
Balance, amount at Nov. 30, 2022	56,667	$ 277	119,094	(155)	(62,549)
Balance, shares at Aug. 31, 2022		27,395
Balance, amount at Aug. 31, 2022	51,518	$ 274	117,668	(150)	(66,274)
Issuance of common stock under employee plans, shares		339
Issuance of common stock under employee plans, amount	657	$ 3	654	0	0
Shares repurchased for tax withholdings on vesting of restricted stock units, shares		(2)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(37)	$ 0	(37)	0	0
Stock-based compensation	809	0	809	0	0
Net income	3,725	0	0	0	3,725
Foreign currency translation adjustment	1	0	0	1	0
Net unrealized loss on investments	(6)	$ 0	0	(6)	0
Balance, shares at Nov. 30, 2022		27,732
Balance, amount at Nov. 30, 2022	56,667	$ 277	119,094	(155)	(62,549)
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		321
Issuance of common stock under employee plans, amount	1,092	$ 3	1,089	0	0
Shares repurchased for tax withholdings on vesting of restricted stock units, shares		(34)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(1,460)	$ 0	(1,460)	0	0
Stock-based compensation	1,210	0	1,210	0	0
Net income	10,763	0	0	0	10,763
Foreign currency translation adjustment	4	0	0	4	0
Net unrealized loss on investments	17	0	0	17	0
Issuance cost of common stock offering	(72)	$ 0	(72)	0	0
Balance, shares at Nov. 30, 2023		28,826
Balance, amount at Nov. 30, 2023	87,154	$ 288	128,543	(134)	(41,543)
Balance, shares at Aug. 31, 2023		28,763
Balance, amount at Aug. 31, 2023	80,145	$ 288	127,630	(141)	(47,632)
Issuance of common stock under employee plans, shares		74
Issuance of common stock under employee plans, amount	774	$ 0	774	0	0
Shares repurchased for tax withholdings on vesting of restricted stock units, shares		(11)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(448)	$ 0	(448)	0	0
Stock-based compensation	659	0	659	0	0
Net income	6,089	0	0	0	6,089
Foreign currency translation adjustment	7	0	0	7	0
Issuance cost of common stock offering	(72)	$ 0	(72)	0	0
Balance, shares at Nov. 30, 2023		28,826
Balance, amount at Nov. 30, 2023	$ 87,154	$ 288	$ 128,543	$ (134)	$ (41,543)