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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended
Jul. 31, 2025
Jul. 31, 2024
Cash flows from operating activities:    
Net loss $ (7,388,000) $ (4,453,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation of fixed assets 194,000 204,000
Amortization of intangible assets 34,000 33,000
Amortization of right of use asset 231,000 207,000
Share-based compensation 2,399,000 259,000
Changes in operating assets and liabilities:    
Accounts receivable (1,016,000) (167,000)
Contract assets 533,000 (459,000)
Inventory (643,000) (850,000)
Right of use asset (66,000)
Other assets (493,000) 962,000
Accounts payable 715,000 (1,625,000)
Earnout payable (50,000) (50,000)
Accrued expenses 22,000 (208,000)
Right-of-use liabilities (212,000) (121,000)
Contract liabilities 135,000 144,000
Net cash used in operating activities (5,605,000) (6,124,000)
Cash flows from investing activities:    
Purchases of property and equipment (1,453,000) (374,000)
Net cash used in investing activities (1,453,000) (374,000)
Cash flows from financing activities:    
Proceeds from convertible notes 9,866,000
Proceeds from issuance of common stock - At The Market offering, net of issuance costs 337,000 6,529,000
Net cash provided by financing activities 10,203,000 6,529,000
Net increase in cash, cash equivalents and restricted cash 3,145,000 31,000
Cash, cash equivalents and restricted cash, beginning of period 6,869,000 3,305,000
Cash, cash equivalents and restricted cash, end of period 10,014,000 3,336,000
Supplemental disclosure of noncash investing and financing activities:    
Common stock issued related to bonus and earnout payments 630,000
Common stock issued related to conversion of convertible debt $ 2,060,000