Leases - Maturities of lease liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
2024	$ 285
2025	294
2026	304
2027	313
2028	211
Thereafter	248
Total lease payments	1,655
Less: interest	247
Total lease obligations	1,408	$ 721
2024	2
2025	0
2026	0
2027	0
2028	0
Thereafter	0
Total lease payments	2
Less: interest	0
Total lease obligations	$ 2	$ 13