CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Feb. 29, 2024	Feb. 28, 2023
Revenues
Total Revenue	$ 7,563	$ 17,206	$ 49,618	$ 42,692
Cost of revenue:
Total cost of revenue	4,407	8,331	25,523	21,425
Gross profit	3,156	8,875	24,095	21,267
Operating expenses:
Research and development	2,139	1,832	6,568	4,881
Selling, general and administrative	3,063	3,250	9,990	8,650
Total operating expenses	5,202	5,082	16,558	13,531
Income (loss) from operations	(2,046)	3,793	7,537	7,736
Interest income, net	584	374	1,796	758
Other income (expense), net	(2)	(18)	2	1
Income (loss) before provision for income taxes	(1,464)	4,149	9,335	8,495
Provision for income taxes	7	17	43	49
Net income (loss)	$ (1,471)	$ 4,132	$ 9,292	$ 8,446
Net income (loss) per share:
Basic	$ (0.05)	$ 0.15	$ 0.32	$ 0.31
Diluted	$ (0.05)	$ 0.14	$ 0.31	$ 0.29
Shares used in per share calculations:
Basic	28,866	27,893	28,773	27,571
Diluted	28,866	29,373	29,670	29,080
Product [Member]
Revenues
Total Revenue	$ 6,730	$ 16,120	$ 45,924	$ 39,715
Cost of revenue:
Total cost of revenue	3,948	7,728	23,574	19,739
Services [Member]
Revenues
Total Revenue	833	1,086	3,694	2,977
Cost of revenue:
Total cost of revenue	$ 459	$ 603	$ 1,949	$ 1,686