Equity Incentive Plan - Summary of Stock Option Activity under the 2014 Plan and the Amended 2017 Plan (Detail)	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Share-based Payment Arrangement [Abstract]
Beginning balance, Shares | shares	445,256
Granted, Shares | shares	64,000
Exercised ,Shares | shares	(11,550)
Forfeited or expired ,Shares | shares	(54)
Ending balance, shares | shares	497,652
Beginning balance of Weighted Average Exercise Price | $ / shares	$ 17.75
Granted ,Weighhted Average Exercise Price | $ / shares	22.09
Exercised ,Weighted Average Exercise Price | $ / shares	8.34
Forfeited or expired ,Weighted Average Exercise Price | $ / shares	18.48
Ending balance of Weighted Average Exercise Price | $ / shares	$ 18.53