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Operating Lease - Summary of Information Related to Lease (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Assets:    
Operating lease right-of-use asset $ 518 $ 557
Liabilities:    
Operating lease liabilities, current portion 163 131
Operating lease liabilities, non-current 424 474
Total operating lease liabilities $ 587 $ 605