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Restricted Stock Units Issued (Detail) - Restricted Stock Units (RSUs)	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Restricted Stock Units
Beginning Restricted Stock Units | shares	43,799
Restricted Stock Units Granted | shares	0
Dividend Equivalents Earned | shares	1,049
Restricted Stock Units Settled | shares	0
Ending Restricted Stock Units | shares	44,848
Weighted-Average Stock Price
Beginning Restricted Stock Units | $ / shares	$ 40.17
Restricted Stock Units Granted | $ / shares	0
Dividend Equivalents Earned | $ / shares	51.13
Restricted Stock Units Settled | $ / shares	0
Ending Restricted Stock Units | $ / shares	$ 40.43

X

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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