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Unamortized Stock-Based Compensation Expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 5,684	$ 6,880	$ 6,561
Unamortized Stock-Based Compensation	9,243	9,879	10,489
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	4,407	5,682	3,166
Unamortized Stock-Based Compensation	$ 6,585	$ 6,804	$ 6,954
Remaining Weighted Average Period (years)	1 year 9 months 18 days	1 year 9 months 18 days	1 year 10 months 24 days
Unrestricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 499	$ 421	$ 461
Unamortized Stock-Based Compensation	$ 217	$ 187	$ 183
Remaining Weighted Average Period (years)	4 months 24 days	4 months 24 days	4 months 24 days
Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 778	$ 777	$ 2,934
Unamortized Stock-Based Compensation	$ 2,441	$ 2,888	$ 3,352
Remaining Weighted Average Period (years)	1 year 9 months 18 days	1 year 9 months 18 days	1 year 10 months 24 days

X

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Amount of noncash expense for share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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