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Summary of Significant Accounting Policies - Summary of financial assets and liabilities measured at fair value on recurring basis (Details) - USD ($) | Dec. 31, 2024 | Mar. 31, 2024
--- | --- | ---
Fair Value |  |
Assets: |  |
Cash | $ 11,851,000 | $ 994,000
Cash equivalents | 15,281,000 | 17,988,000
Term loan advance to Amplex | 0 | 300,000
Carrying Value |  |
Assets: |  |
Cash | 11,851,000 | 994,000
Cash equivalents | 15,281,000 | 17,988,000
Term loan advance to Amplex | 0 | 300,000
Liabilities: |  |
Contingent liability (Note 13) | 2,600 |
Level 1 |  |
Assets: |  |
Cash | 11,851,000 | 994,000
Cash equivalents | 15,281,000 | 17,988,000
Term loan advance to Amplex | 0 | 0
Level 2 |  |
Assets: |  |
Cash | 0 | 0
Cash equivalents | 0 | 0
Term loan advance to Amplex | 0 | 0
Level 3 |  |
Assets: |  |
Cash | 0 | 0
Cash equivalents | 0 | 0
Term loan advance to Amplex | 0 | 300,000
Liabilities: |  |
Dissenting shareholders' liability (Note 2) | $ 0 | $ 0

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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