Commitments and Contingencies Summary of Amounts Reported in the Balance Sheet in Respect of Operating Lease Assets and Corresponding Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets:
Operating lease right-of-use assets	$ 5,869	$ 6,301
Current:
Operating lease liability, current	1,027	538
Noncurrent:
Operating lease liabilities, net of current portion	5,793	6,248
Total operating lease liabilities	$ 6,820	$ 6,786