Stock Based Compensation - Schedule of Changes in Stock Units (Detail) - $ / shares	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Balance at beginning of period	25,190	24,813
Grants	22,950	25,190
Vesting	(25,190)	(17,682)
Forfeited/expired	0	(1,105)
Balance at end of period	22,950	31,216
Balance at beginning of period	$ 27.79	$ 36.21
Weighted Average Grant Date Fair Value, Grants	30.51	27.79
Weighted Average Grant Date Fair Value, Vesting	27.79	38.54
Weighted Average Grant Date Fair Value, Forfeited/expired	0	29.7
Balance at end of period	$ 30.51	$ 28.25
Restricted Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Balance at beginning of period	53,817	39,657
Grants	0	0
Vesting	0	0
Forfeited/expired	(2,389)	(2,888)
Balance at end of period	51,428	36,769
Balance at beginning of period	$ 37.04	$ 47.83
Weighted Average Grant Date Fair Value, Grants	0	0
Weighted Average Grant Date Fair Value, Vesting	0	0
Weighted Average Grant Date Fair Value, Forfeited/expired	34.8	47.87
Balance at end of period	$ 37.14	$ 47.83
Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Balance at beginning of period	75,227	47,082
Grants	0	0
Vesting	(20,532)	0
Forfeited/expired	(2,493)	(3,456)
Balance at end of period	52,202	43,626
Balance at beginning of period	$ 40.24	$ 48
Weighted Average Grant Date Fair Value, Grants	0	0
Weighted Average Grant Date Fair Value, Vesting	48.91	0
Weighted Average Grant Date Fair Value, Forfeited/expired	35.21	48.04
Balance at end of period	$ 37.07	$ 48