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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Feb. 28, 2025
Feb. 29, 2024
Cash flows from operating activities:    
Net income (loss) $ (1,011) $ 9,292
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Stock-based compensation expense 3,741 1,744
Depreciation and amortization 1,573 469
Deferred income taxes (293) 0
Amortization of operating lease right-of-use assets 795 522
Accretion of investment discount 0 (130)
Changes in operating assets and liabilities, net of acquisition:    
Accounts receivable (962) 11,130
Inventories (2,211) (14,182)
Prepaid expenses and other current assets (4,831) (600)
Accounts payable 139 (4,232)
Accrued expenses (515) (874)
Deferred revenue (1,004) (2,368)
Operating lease liabilities (470) (257)
Income taxes payable (49) 18
Net cash provided by (used in) operating activities (5,098) 532
Cash flows from investing activities:    
Purchases of property and equipment (2,174) (703)
Proceeds from maturities of investments 0 18,000
Payments for business acquisition, net of cash and cash equivalent acquired (11,075) 0
Net cash provided by (used in) investing activities (13,249) 17,297
Cash flows from financing activities:    
Proceeds from issuance of common stock under employee plans 894 1,270
Shares repurchased for tax withholdings on vesting of restricted stock units (520) (1,480)
Proceeds from issuance of common stock from public offering, net of issuance costs 0 (72)
Net cash provided by (used in) financing activities 374 (282)
Effect of exchange rate changes on cash, cash equivalents and restricted cash 25 (20)
Net increase (decrease) in cash, cash equivalents and restricted cash (17,948) 17,527
Cash, cash equivalents and restricted cash, beginning of period (1) 49,309 30,204
Cash, cash equivalents and restricted cash, end of period (1) $ 31,361 $ 47,731