Aggregate investment in suspend redemptions.

No definition available.

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- Definition

Impairment of investments.

+ References

No definition available.

+ Details

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- Definition

Impairment recognized related to one of short term funds invested.

+ References

No definition available.

+ Details

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- Definition

Number of short-term funds invested.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

+ References

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- Definition

The net amount paid (received) by the reporting entity through acquisition or sale and maturities of short-term investments with an original maturity that is three months or less which qualify for treatment as an investing activity based on management's intention and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

+ References

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- Definition

Amount of unrealized gain (loss) on investment.

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Fair value measurement - Additional Information (Detail)			3 Months Ended	6 Months Ended		12 Months Ended
	Nov. 11, 2022 USD ($)	Mar. 12, 2021 USD ($) Investment	Sep. 30, 2022 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unrealized gains on short-term investments				$ 249,000	$ 275
Unrealized gains reclassified to earnings				26	$ 193
CSAM [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Number of short-term funds invested \| Investment		2
Aggregate investment in suspend redemptions		$ 110,350,000
Payments for (proceeds from) short-term investments	$ 2,600,000	$ 89,000,000.0
Impairment expense			$ 200,000	$ 1,200,000
Impairment of investments						$ 3,300,000