Leases - Future Minimum Lease Payments Under Non-Cancellable Leases (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Operating Leases
Remainder of 2021	$ 448
2022	849
2023	815
2024	830
2025	346
Total future minimum lease payments	3,288
Less imputed interest	(662)
Total	2,626	$ 2,898
Finance Leases
Remainder of 2021	65
2022	75
2023	0
2024	0
2025	0
Total future minimum lease payments	140
Less imputed interest	(10)
Total	$ 130	$ 190