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Earnings (Loss) per Share Data - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Nov. 01, 2021
Exercisable stock options, included in the diluted earnings per share calculation		252,000		252,000
Effect of dilutive stock options	0	132,000	0	129,000
2009 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			0
Number of shares, options outstanding					0
Inclusive Of Diluted Earning [Member]
Anti-dilutive shares	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

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

+ References

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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