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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Cash flows from operating activities:    
Net earnings (loss) $ 5,345 $ (833)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:    
Depreciation 1,488 1,433
Bad debt provision 185 (8)
Stock-based compensation expense 424 368
Deferred income taxes 108 (22)
Change in assets and liabilities:    
Receivables 3,296 (209)
Inventories 223 (706)
Accounts payable and other accrued expenses (4,660) (6,412)
Deferred revenue 822 7,869
Other, net 1,688 (2,066)
Net cash provided by (used in) operating activities 8,919 (586)
Cash flows from investing activities:    
Capital expenditures (2,919) (919)
Net cash used in investing activities (2,919) (919)
Cash flows from financing activities:    
Proceeds from short-term borrowings 79,116 4,431
Repayments on short-term borrowings (76,847) (6,019)
Proceeds from sale-leaseback financing transaction 0 13,456
Payments on sale-leaseback financing transaction (316) (282)
Proceeds from long-term lease obligations 202 0
Payments on long-term lease obligations (67) (61)
Net cash provided by financing activities 2,088 11,525
Effect of exchange rate changes on cash, cash equivalents and restricted cash (192) (597)
Increase in cash, cash equivalents and restricted cash 7,896 9,423
Cash, cash equivalents and restricted cash, beginning of period 13,815 6,894
Cash, cash equivalents and restricted cash, end of period $ 21,711 $ 16,317