CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Feb. 29, 2024	Feb. 28, 2023
Cash flows from operating activities:
Net income	$ 9,292	$ 8,446
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	1,744	2,095
Depreciation and amortization	469	337
Accretion of investment discount	(130)	(305)
Amortization of operating lease right-of-use assets	522	479
Provision for doubtful accounts	0	24
Changes in operating assets and liabilities:
Accounts receivable	11,130	1,414
Inventories	(14,182)	(6,783)
Prepaid expenses and other current assets	(600)	(167)
Accounts payable	(4,232)	822
Accrued expenses	(874)	(126)
Deferred revenue	(2,368)	(1,633)
Operating lease liabilities	(257)	(469)
Income taxes payable	18	9
Net cash provided by operating activities	532	4,143
Cash flows from investing activities:
Purchases of property and equipment	(703)	(178)
Proceeds from maturities of investments	18,000	8,000
Purchases of investments	0	(33,294)
Net cash provided by (used in) investing activities	17,297	(25,472)
Cash flows from financing activities:
Proceeds from issuance of common stock under employee plans	1,270	1,965
Shares repurchased for tax withholdings on vesting of restricted stock units, amount	(1,480)	(1,680)
Proceeds from issuance of common stock from public offering, net of issuance costs	(72)	6,853
Net cash provided by (used in) financing activities	(282)	7,138
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(20)	(35)
Net increase (decrease) in cash, cash equivalents and restricted cash	17,527	(14,226)
Cash, cash equivalents and restricted cash, beginning of period	30,204	31,564
Cash, cash equivalents and restricted cash, end of period	$ 47,731	$ 17,338