Summary of Significant Accounting Policies - Summary of financial assets and liabilities measured at fair value on recurring basis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Fair Value
Assets:
Cash	$ 12,200	$ 994
Cash equivalents	28,458	17,988
Term loan advance to Amplex	0	300
Liabilities:
Dissenting shareholders' liability (Note 2)	5,355	0
Contingent liability (Note 13)	2,620	0
Carrying Value
Assets:
Cash	12,200	994
Cash equivalents	28,458	17,988
Term loan advance to Amplex	0	300
Liabilities:
Dissenting shareholders' liability (Note 2)	5,355	0
Contingent liability (Note 13)	2,620	0
Dissenting shareholders' liability (Note 2)	5,355	0
Level 1
Assets:
Cash	12,200	994
Cash equivalents	28,458	17,988
Term loan advance to Amplex	0	0
Liabilities:
Dissenting shareholders' liability (Note 2)	0	0
Contingent liability (Note 13)	0	0
Level 2
Assets:
Cash	0	0
Cash equivalents	0	0
Term loan advance to Amplex	0	0
Liabilities:
Dissenting shareholders' liability (Note 2)	0	0
Contingent liability (Note 13)	0	0
Level 3
Assets:
Cash	0	0
Cash equivalents	0	0
Term loan advance to Amplex	0	300
Liabilities:
Dissenting shareholders' liability (Note 2)	5,355	0
Contingent liability (Note 13)	$ 2,620	$ 0