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Lease Arrangements - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Lessee Lease Description [Line Items] |  |  |
Right-of-use assets (Note 9 and 18) | $ 944 | $ 1,306 | $ 1,971
Operating lease expense | 495 | 520 |
Office Premise |  |  |
Lessee Lease Description [Line Items] |  |  |
Right-of-use assets (Note 9 and 18) | $ 944 | $ 1,306 |
Minimum |  |  |
Lessee Lease Description [Line Items] |  |  |
Discount rates for lease liabilities | 1.44% | 1.44% |
Minimum | Office Premise |  |  |
Lessee Lease Description [Line Items] |  |  |
Lease term | 2 years |  |
Maximum |  |  |
Lessee Lease Description [Line Items] |  |  |
Discount rates for lease liabilities | 3.60% | 2.88% |
Maximum | Office Premise |  |  |
Lessee Lease Description [Line Items] |  |  |
Lease term | 5 years |  |

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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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