Income Taxes - Income tax expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Current:
Federal	$ 0	$ 22
State	0	10
Total current	0	32
Deferred:
Federal	0	708
State	0	677
Total deferred	0	1,385
Income tax expense	$ 0	$ 1,417