Stock Options and Other Equity-Based Incentive Instruments - Summary of Options Outstanding (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options (in shares)	7,500	15,500
Weighted average exercise price (in USD per share)	$ 23.21	$ 21.27
Intrinsic value (in thousands)	$ 66
Weighted average remaining contractual term (in years)	1 year
Currently Exercisable
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options (in shares)	7,500
Weighted average exercise price (in USD per share)	$ 23.21
Intrinsic value (in thousands)	$ 66
Weighted average remaining contractual term (in years)	1 year
Currently Not Exercisable
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options (in shares)	0
Weighted average exercise price (in USD per share)	$ 0
Intrinsic value (in thousands)	$ 0
Weighted average remaining contractual term (in years)	0 years

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

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

+ References

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

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

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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+ References

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Name Accounting Standards Codification
-Paragraph 2
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-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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