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Per Share Data - Additional Information (Detail) - shares	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Officer's Compensation Board Incentive Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of shares held for incentive plans, to be deducted in calculation of the weighted-average shares for EPS computation	2,800,866	2,403,907	2,800,866	2,215,068
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from calculation of diluted EPS	0	0	0	0

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482662/260-10-50-1

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+ References

No definition available.

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- Definition

Number of shares of treasury stock determined by relating the portion of time within a reporting period that treasury shares have been outstanding to the total time in that period. Treasury stock is stock that the Entity has issued but subsequently reacquired.

+ References

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-Name Accounting Standards Codification
-Topic 260
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-Section 45
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-10

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