Stock-Based Compensation - Summary of Stock Option Activity under Company's Stock Option Plans (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-Based Payment Arrangement [Abstract]
Options outstanding, beginning balance	120,000
Options Outstanding, Granted	25,000
Options Outstanding, Exercised	(2,500)
Options Outstanding, Forfeited	0
Options Outstanding, Canceled	(2,500)
Options outstanding, ending balance	140,000	120,000
Options Outstanding, Options exercisable	115,000
Options Outstanding, Options vested or expected to vest	139,128
Weighted-Average Exercise Price Per Share, Options outstanding, beginning balance	$ 37.29
Weighted-Average Exercise Price Per Share, Granted	36.46
Weighted-Average Exercise Price Per Share, Exercised	7.03
Weighted-Average Exercise Price Per Share, Forfeited	0
Weighted- Average Exercise Price Per Share, Canceled	7.03
Weighted- Average Exercise Price Per Share, Options outstanding, ending balance	38.22	$ 37.29
Weighted- Average Exercise Price Per Share, Options exercisable	38.61
Weighted-Average Exercise Price Per Share, Options vested or expected to vest	$ 38.24
Weighted-Average Remaining Contractual Term in Years, Options outstanding	6 years 4 months 2 days
Weighted-Average Remaining Contractual Term in Years, Options exercisable	5 years 8 months 1 day
Weighted-Average Remaining Contractual Term in Years, Options vested or expected to vest	6 years 3 months 25 days
Aggregate Intrinsic Value, Exercised	$ 81	$ 1,100	$ 200
Aggregate Intrinsic Value, Options outstanding	1,107
Aggregate Intrinsic Value, Options exercisable	1,107
Aggregate Intrinsic Value, Options vested or expected to vest	$ 1,107