Stock Option Plan - Assumptions for Volatility, Expected Life, Dividend Yield and Risk-Free Interest Rate (Detail)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Risk-free interest rate, Minimum	3.70%	3.51%
Risk-free interest rate, Maximum	4.09%	4.01%
Expected volatility, Minimum	112.17%	89.69%
Expected volatility, Maximum	170.50%	112.12%
Expected dividend yield	0.00%	0.00%
Maximum [Member]
Expected life in years	6 years 21 days	6 years 3 months
Minimum [Member]
Expected life in years	5 years 14 days	5 years 21 days