Commitments and Contingencies Summary of Amounts Reported in the Balance Sheet in Respect of Operating Lease Assets and Corresponding Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets:
Operating lease right-of-use assets	$ 6,160	$ 6,301
Current:
Operating lease liabilities	1,560	538
Noncurrent:
Operating lease liabilities, net of current portion	6,099	6,248
Total operating lease liabilities	$ 7,659	$ 6,786