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Equity Plan Awards - Unamortized Stock-Based Compensation Expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 6,138	$ 5,684	$ 6,880
Unamortized Stock-Based Compensation	9,310	9,243	9,879
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	4,830	4,407	5,682
Unamortized Stock-Based Compensation	$ 6,593	$ 6,585	$ 6,804
Remaining Weighted Average Period (years)	1 year 9 months 18 days	1 year 9 months 18 days	1 year 9 months 18 days
Unrestricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 520	$ 499	$ 421
Unamortized Stock-Based Compensation	$ 217	$ 217	$ 187
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	$ 788	$ 778	$ 777
Unamortized Stock-Based Compensation	$ 2,500	$ 2,441	$ 2,888
Remaining Weighted Average Period (years)	1 year 9 months 18 days	1 year 9 months 18 days	1 year 9 months 18 days

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