v3.25.2
Significant Accounting Policies - Additional Information (Details)
 12 Months Ended
Apr. 30, 2025
USD ($)
Segment
Apr. 30, 2024
USD ($)
Significant Accounting Policies [Line Items]    
Depreciation expense $ 7,968,000 $ 11,560,000
Administrative costs paid to third party 4,878,000 799,000
Restricted cash 334,000 334,000
Allowance for uncollectible accounts receivable 3,193,000 500,000
Impairment of long-lived assets $ 0 $ 0
Number of reportable segment | Segment 1  
Number of operating segment | Segment 1  
Segment Reporting, Expense Information Used by CODM, Description The Company’s Chief Executive Officer reviews financial information presented on a consolidated basis and in a consistent manner with that is included in the consolidated statements of operations and comprehensive loss for purposes of assessing performance and making decisions on how to allocate resources. As the Company operates as one operating segment, all required segment financial information, such as revenues and significant operating expenses, is found in the accompanying consolidated financial statements. For the periods presented, all of the Company’s long-lived assets were located in the United States, and all revenues from leasing of ASSURE© System devices to patients were earned in the United States. The accounting policies for segment reporting are the same as for the Company as a whole.  
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] srt:ChiefExecutiveOfficerMember  
Costs of Revenue    
Significant Accounting Policies [Line Items]    
Depreciation expense $ 1,208,000  
Medical Rental Equipment | Minimum    
Significant Accounting Policies [Line Items]    
Estimated useful life 2 years 1 year 6 months
Medical Rental Equipment | Maximum    
Significant Accounting Policies [Line Items]    
Estimated useful life 8 years 7 years
Therapy Cables    
Significant Accounting Policies [Line Items]    
Estimated useful life 2 years  
Batteries    
Significant Accounting Policies [Line Items]    
Estimated useful life 2 years  
Batteries | Costs of Revenue    
Significant Accounting Policies [Line Items]    
Depreciation expense $ 198,000  
Batteries | Minimum    
Significant Accounting Policies [Line Items]    
Estimated useful life 2 years  
Batteries | Maximum    
Significant Accounting Policies [Line Items]    
Estimated useful life 6 years  
Credit Card Collateralization    
Significant Accounting Policies [Line Items]    
Restricted cash $ 225,000 $ 225,000
Lease Agreements | Letter of Credit    
Significant Accounting Policies [Line Items]    
Cash security deposit 109,000 $ 109,000
IPO    
Significant Accounting Policies [Line Items]    
IPO offering costs 5,398,000  
IPO offering costs in accounts payable and accrued expenses $ 1,875,000