Investments in Securities and Derivative Instruments - Fair Value in the Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 31, 2022
Assets:
Derivative asset	$ 484	$ 0
Liabilities:
Derivative liability	41	0
Exchange-traded options & futures
Assets:
Derivative asset	484	0
Liabilities:
Derivative liability	$ 41	$ 0

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Balance Type:	credit
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