Net Loss per Share - Computation of Denominators Used in Net Loss per Share (Detail) - shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Basic:
Weighted average common shares outstanding - Basic	4,562,738	4,512,422	4,471,130
Diluted:
Weighted average common shares outstanding - Basic	4,562,738	4,512,422	4,471,130
Common stock equivalents	0	0	0
Denominator for diluted net loss per share	4,562,738	4,512,422	4,471,130