v3.25.4
Real Estate Properties under Development, Net - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Line Items]          
Real estate properties under development pledged to banks to obtain loan facilities $ 84,700 $ 86,000 $ 87,500 $ 95,400 $ 147,500
Transfers of real estate properties under development 0 0 0 62,900 92,800
Construction in Progress          
Property, Plant and Equipment [Line Items]          
Interest for bank loans 32,487 27,762 22,369 16,625 10,866
Capitalized debt issuance costs 1,920 1,920 1,920 1,920 1,754
Nam Tai Inno Park [Member]          
Property, Plant and Equipment [Line Items]          
Real estate properties held for sales type lease transferred of real estate properties 0 0 0 0 53,700
Recognized cost of sales 1,800 1,000 300 14,700 23,700
Real estate properties held for sales type lease pledged for loan 0 0 0 0 29,400
Nam Tai Longxi [Member]          
Property, Plant and Equipment [Line Items]          
Real estate properties held for sales transferred of real estate properties 4 600 154,500 0 0
Recognized cost of sales 5,800 68,500 20,800 0 0
Real estate properties held for sales pledged for loan $ 3,800 $ 0 $ 0 $ 0 $ 0