Stock-Based Compensation - Schedule of Unrecognized Stock-based Compensation Expense by Type of Award and Weighted-average Recognition Period (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2023	May 31, 2015	Feb. 20, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense, Net of Estimated Forfeitures		$ 62,000	$ 168,000
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense, Net of Estimated Forfeitures	$ 10,607
Weighted-average Recognition Period	2 years 9 months 14 days
Restricted stock and restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense, Net of Estimated Forfeitures	$ 11,891
Weighted-average Recognition Period	1 year 11 months 4 days