Stock Based Compensation - Information with Respect to Unvested Restricted Stock Awards and Incentive Plan (Detail) - Restricted Stock [Member] - $ / shares	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, shares	342,459	679,997	342,459	679,997
Granted, Number of Restricted Stock Awards	6,000	4,000	7,000	3,000
Vested, Number of Restricted Stock Awards	(40,352)	(50,667)	(34,689)	(51,125)
Forfeited, Number of Restricted Stock Awards	(2,125)	(3,265)	(295)	(700)
Ending balance, shares	305,982	630,065	277,998	581,240
Nonvested, Weighted-Average Grant Date Fair Value, Beginning balance	$ 39.86	$ 39.72	$ 39.86	$ 39.72
Granted, Weighted-Average Grant Date Fair Value	51.76	70.58	58.52	67.3
Vested, Weighted-Average Grant Date Fair Value	54.83	50.68	45.56	45.04
Forfeited, Weighted-Average Grant Date Fair Value	40.33	45.85	55.41	45.61
Nonvested, Weighted-Average Grant Date Fair Value, Ending balance	$ 38.11	$ 39	$ 37.68	$ 38.61