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Investments and Fair Value Measurement - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Investments [Line Items]
Investments	$ 2,000,000		$ 2,000,000
Cash and cash equivalents	5,295,000	$ 20,196,000	5,295,000	$ 20,196,000	$ 15,301,000
Fair value of investment in equity securities	0		0
Interest income on investments in debt securities			100,000
(Loss) gain on investment in equity securities	0	$ (48,000)	12,000	$ (123,000)
Liquidation of equity securities			700,000
Maximum [Member]
Investments [Line Items]
Interest income on investments in debt securities	$ 100,000
(Loss) gain on investment in equity securities			$ 100,000

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Investments.

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Amount 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. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Sum of the carrying amounts as of the balance sheet date of all investments.

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