Investments and Fair Value Measurement - Additional Information (Detail) - USD ($)	3 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023
Investments [Line Items]
Investments	$ 5,000,000
Cash and cash equivalents	10,754,000	$ 15,568,000	$ 15,301,000
Purchase of equity securities	0	728,000
Sale of equity securities	718,000	0
Fair value of investment in equity securities	0
Interest income on investments in debt securities	100,000
Gain (loss) on investment in equity securities	12,000	$ (5,000)
Liquidation of equity securities	700,000
Maximum [Member]
Investments [Line Items]
Unrealized gains on short-term investments	100,000
Gain (loss) on investment in equity securities	$ 100,000

Interest income on investments in debt securities.

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Investments.

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Liquidation of equity securities fvni.

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No definition available.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading).

+ References

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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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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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Sum of the carrying amounts as of the balance sheet date of all investments.

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Amount of cash outflow to acquire investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as investing activity.

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Amount of cash inflow from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as investing activity.

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