Incentive Compensation Plan - Unvested Service-Based Restricted Stock Awards (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, beginning of the year, Shares	286,015	250,800	171,500
Granted, Shares	108,000	134,515	95,300
Vested, Shares	(75,500)	(88,389)	(12,000)
Forfeited, Shares	(7,250)	(10,911)	(4,000)
Outstanding, end of the year, Shares	311,265	286,015	250,800
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding, beginning of the year, Weighted Average Grant Date Fair Value	$ 13.82	$ 14.13	$ 14.27
Grant Price (in dollars per share)	15.98	13.64	13.72
Vested, Weighted Average Grant Date Fair Value	14.24	14.46	12.99
Forfeited, Weighted Average Grant Date Fair Value	13.11	13.66	13.85
Outstanding, end of the year, Weighted Average Grant Date Fair Value	$ 14.48	$ 13.82	$ 14.13