CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($)	Total	Common Stock	Additional Paid-In Capital	Accumulated other comprehensive loss	Retained Earnings (Accumulated Deficit)
Balance, shares at May. 31, 2022		27,120,000
Balance, amount at May. 31, 2022	$ 50,989,000	$ 271,000	$ 117,686,000	$ (105,000)	$ (66,863,000)
Issuance of common stock under employee plans, shares		1,156,000
Issuance of common stock under employee plans, amount	1,965,000	$ 11,000	1,954,000	0	0
Shares repurchased for tax withholdings on vesting of restricted stock units, shares		(165)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(1,680,000)	$ (1,000)	(1,679,000)	0	0
Proceeds from public offering, net of issuance costs		209
Proceeds from public offering, net of issuance costs, amount	6,853	$ 2	6,851	0	0
Stock-based compensation	2,118,000	0	2,118,000	0	0
Net income	8,446,000	0	0	0	8,446,000
Foreign currency translation adjustment	(35,000)	0	0	(35,000)	0
Net unrealized loss on investments	(22,000)	$ 0	0	(22,000)	0
Balance, shares at Feb. 28, 2023		28,320,000
Balance, amount at Feb. 28, 2023	68,634,000	$ 283,000	126,930,000	(162,000)	(58,417,000)
Balance, shares at Nov. 30, 2022		27,732,000
Balance, amount at Nov. 30, 2022	56,667,000	$ 277,000	119,094,000	(155,000)	(62,549,000)
Issuance of common stock under employee plans, shares		395,000
Issuance of common stock under employee plans, amount	853,000	$ 4,000	849,000	0	0
Shares repurchased for tax withholdings on vesting of restricted stock units, shares		(16,000)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	$ (464,000)	$ 0	$ (464,000)	0	0
Proceeds from public offering, net of issuance costs	6,853	2	6,851
Proceeds from public offering, net of issuance costs, amount		$ 209
Stock-based compensation	$ 600,000	0	$ 600,000	0
Net income	4,132,000	0	0	0	4,132,000
Foreign currency translation adjustment	9,000	0	0	9,000	0
Net unrealized loss on investments	(16,000)	$ 0	0	(16,000)	0
Balance, shares at Feb. 28, 2023		28,320,000
Balance, amount at Feb. 28, 2023	68,634,000	$ 283,000	126,930,000	(162,000)	(58,417,000)
Balance, shares at May. 31, 2023		28,539,000
Balance, amount at May. 31, 2023	75,600,000	$ 285,000	127,776,000	(155,000)	(52,306,000)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(1,480,000)
Net income	9,292,000
Balance, shares at Feb. 29, 2024		28,906,000
Balance, amount at Feb. 29, 2024	86,497,000	$ 289,000	129,366,000	(144,000)	(43,014,000)
Balance, shares at May. 31, 2023		28,539,000
Balance, amount at May. 31, 2023	75,600,000	$ 285,000	127,776,000	(155,000)	(52,306,000)
Issuance of common stock under employee plans, shares		402,000
Issuance of common stock under employee plans, amount	1,270,000	$ 4,000	1,266,000	0	0
Shares repurchased for tax withholdings on vesting of restricted stock units, shares		(35,000)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(1,480,000)	$ 0	(1,480,000)	0	0
Stock-based compensation	1,876,000	0	1,876,000	0	0
Net income	9,292,000	0	0	0	9,292,000
Foreign currency translation adjustment	(6,000)	0	0	(6,000)	0
Net unrealized loss on investments	17,000	0	0	17,000	0
Issuance cost of common stock offering	(72,000)	$ 0	(72,000)	0	0
Balance, shares at Feb. 28, 2024		28,906,000
Balance, amount at Feb. 28, 2024	86,497,000	$ 289,000	129,366,000	(144,000)	(43,014,000)
Balance, shares at Nov. 30, 2023		28,826,000
Balance, amount at Nov. 30, 2023	87,154,000	$ 288,000	128,543,000	(134,000)	(41,543,000)
Issuance of common stock under employee plans, shares		81,000
Issuance of common stock under employee plans, amount	178,000	$ 1,000	177,000	0	0
Shares repurchased for tax withholdings on vesting of restricted stock units, shares		(1,000)
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(20,000)	$ 0	(20,000)	0	0
Stock-based compensation	666,000	0	666,000	0	0
Net income	(1,471,000)	0	0	0	(1,471,000)
Foreign currency translation adjustment	(10,000)	$ 0	0	(10,000)	0
Balance, shares at Feb. 29, 2024		28,906,000
Balance, amount at Feb. 29, 2024	$ 86,497,000	$ 289,000	$ 129,366,000	$ (144,000)	$ (43,014,000)