v3.26.1
Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
shares in Millions
1 Months Ended 3 Months Ended
Sep. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Summary Of Significant Accounting Policies [Line Items]        
Cash and cash equivalents   $ 1,670,000 $ 9,055,000 $ 5,024,000
Restricted cash   143,000 143,000 143,000
Accumulated deficit   (357,338,000)   (356,000,000)
Cash flow from operations   3,213,000 3,940,000  
Total current assets   3,226,000   6,627,000
Total current liabilities   1,893,000   2,785,000
Working capital   $ 1,300,000    
Insurance premium financing agreement description   In September 2025, the Company entered into an insurance premium financing agreement for $0.4 million, with a term of nine months and an annual interest rate of 7.82%. The Company made a down payment of 10% and is required to make monthly principal and interest payments of $40,468 over the term of the agreement, which will mature in June 2026. The insurance premium financing liability was approximately zero and $0.1 million as of June 30, 2026, and March 31, 2026, respectively.    
Financing agreement amount $ 400,000      
Percentage of down payment 10.00%      
Insurance premium financing liability   $ 0   118,000
Dilutive effect   $ 0 $ 0  
Common stock equivalents excluded from computing diluted net loss per share   5.0 0.7  
Minimum percentage of income tax payment net of refunds received   5.00%    
Percentage of accelerated depreciation deductions on qualified property   100.00%    
Insurance Premium Financing Liability [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Annual interest rate 7.82%      
Monthly principal and interest payments $ 40,468      
Prepaid insurance   $ 100,000   $ 200,000