Stock Based Compensation - Information with Respect to Unvested Restricted Stock Awards and Incentive Plan (Detail) - Restricted Stock [Member] - $ / shares	3 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, shares	241,527	271,417	305,982	342,459
Granted, Number of Restricted Stock Awards	204,500		7,000	6,000
Vested, Number of Restricted Stock Awards	(19,637)	(29,690)	(34,689)	(40,352)
Forfeited, Number of Restricted Stock Awards	(3,500)	(200)	(295)	(2,125)
Ending balance, shares	422,890	241,527	277,998	305,982
Nonvested, Weighted-Average Grant Date Fair Value, Beginning balance	$ 34.78	$ 37.12	$ 38.11	$ 39.86
Granted, Weighted-Average Grant Date Fair Value	79.33		58.52	51.76
Vested, Weighted-Average Grant Date Fair Value	48.17	56.05	45.56	54.83
Forfeited, Weighted-Average Grant Date Fair Value	34.58	51.87	55.41	40.33
Nonvested, Weighted-Average Grant Date Fair Value, Ending balance	$ 55.7	$ 34.78	$ 37.68	$ 38.11