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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Cash flows from operating activities:    
Net earnings (loss) $ 265 $ (5,675)
Adjustments to reconcile net earnings (loss) to net cash used in operating activities:    
Depreciation 2,142 2,092
Bad debt provision 79 27
Stock-based compensation expense 699 502
Deferred income taxes 368 104
Change in assets and liabilities:    
Receivables (2,813) (2,199)
Inventories 2,384 (3,430)
Income tax receivable 0 316
Accounts payable and other accrued expenses (4,534) 10,692
Deferred revenue 1,533 (19)
Other, net (3,670) (3,497)
Net cash used in operating activities (3,547) (1,087)
Cash flows from investing activities:    
Capital expenditures (1,562) (1,222)
Net cash used in investing activities (1,562) (1,222)
Cash flows from financing activities:    
Proceeds from short-term borrowings 27,742 42,975
Repayments on short-term borrowings (23,577) (40,840)
Proceeds from sale-leaseback financing transaction 13,473 0
Payments on sale-leaseback financing transaction (426) 0
Payments on long-term lease obligations (123) (16)
Net cash provided by financing activities 17,089 2,119
Effect of exchange rate changes on cash, cash equivalents and restricted cash (458) (39)
Increase (decrease) in cash, cash equivalents and restricted cash 11,522 (229)
Cash, cash equivalents and restricted cash, beginning of period 6,894 5,731
Cash, cash equivalents and restricted cash, end of period $ 18,416 $ 5,502