v3.25.4
Operating Leases - Additional Information (Detail)
$ in Thousands
1 Months Ended 12 Months Ended
Mar. 21, 2016
Mar. 25, 2014
Oct. 31, 2018
Dec. 31, 2024
USD ($)
ft²
Lease
Dec. 31, 2023
USD ($)
ft²
Dec. 31, 2022
USD ($)
ft²
Dec. 31, 2021
USD ($)
ft²
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Jun. 30, 2024
Nov. 30, 2022
Jul. 19, 2022
Aug. 31, 2020
May 31, 2020
Apr. 30, 2020
Jan. 31, 2020
ft²
Sep. 30, 2019
ft²
Aug. 31, 2018
Operating Leased Assets [Line Items]                                    
Operating lease income | $       $ 14,474 $ 16,028 $ 16,475 $ 12,076 $ 3,817 $ 2,526                  
Right of use assets | $           37 92 9,695                    
Operating lease liability | $         $ 2,554 $ 2,959 $ 9,206 $ 10,308                    
Number of operating leases | Lease       6                            
Nam Tai Investment (Shenzhen) Co., Ltd. ("NTISZ")                                    
Operating Leased Assets [Line Items]                                    
Lessee operating leased area       21,843 11,137 14,822 22,820                      
Percentage of occupancy rate of property leased out       57.00% 29.00% 39.00% 60.00%                      
Lease expiration beginning year       2021                            
Lease expiration ending year       2027                            
Nam Tai Investment (Shenzhen) Co., Ltd. ("NTISZ") | Building [Member]                                    
Operating Leased Assets [Line Items]                                    
Ending date of lease term Oct. 31, 2017                                  
Nam Tai Investment (Shenzhen) Co., Ltd. ("NTISZ") | Namtai Shenzhen                                    
Operating Leased Assets [Line Items]                                    
Lease agreement date       Mar. 25, 2014                            
Nam Tai Investment (Shenzhen) Co., Ltd. ("NTISZ") | Namtai Shenzhen | Building [Member] | Lease Original Term                                    
Operating Leased Assets [Line Items]                                    
Lease expiration term   3 years                                
Beginning date of lease term   May 01, 2014                                
Ending date of lease term   Apr. 30, 2017                                
Nam Tai Investment (Shenzhen) Co., Ltd. ("NTISZ") | Namtai Shenzhen | Building [Member] | Lease Extended Term                                    
Operating Leased Assets [Line Items]                                    
Lease expiration term 6 months                                  
Wuxi Zastron Precision-Flex Co., Ltd. (Wuxi Zastron-Flex) | Building [Member]                                    
Operating Leased Assets [Line Items]                                    
Lease expiration term     12 years                              
Beginning date of lease term     Feb. 01, 2019                              
Operating lease rent free incentive period     10 months                              
Wuxi Zastron Precision-Flex Co., Ltd. (Wuxi Zastron-Flex) | Assets Leased To Others [Member]                                    
Operating Leased Assets [Line Items]                                    
Lease expiration term     12 years                              
Beginning date of lease term     Feb. 01, 2019                              
Operating lease rent free incentive period     10 months                              
Nam Tai Tang Xi Technology Park                                    
Operating Leased Assets [Line Items]                                    
Percentage of occupancy rate of property leased out         56.00% 73.00% 93.00% 78.00%   44.00%                
Nam Tai Tang Xi Technology Park | Building [Member]                                    
Operating Leased Assets [Line Items]                                    
Lease expiration term                                 9 years 7 months 6 days  
Area of contract floor                                 7,586  
Nam Tai Tang Xi Technology Park | Assets Leased To Others [Member]                                    
Operating Leased Assets [Line Items]                                    
Lease expiration beginning year               2021                    
Lease expiration ending year       2024                            
Inno Consultant Company Limited ("ICCL") | Hong Kong Office                                    
Operating Leased Assets [Line Items]                                    
Lease expiration term                                   3 years
Shanghai Nam Tai Business Incubator Co., Ltd. ("SHCY")                                    
Operating Leased Assets [Line Items]                                    
Percentage of occupancy rate of property leased out             91.00% 70.00%     38.00%              
Shanghai Nam Tai Business Incubator Co., Ltd. ("SHCY") | Building [Member]                                    
Operating Leased Assets [Line Items]                                    
Lease expiration term                               10 years    
Area of contract floor                               3,981    
Nam Tai Inno Park [Member]                                    
Operating Leased Assets [Line Items]                                    
Lessee operating leased area       209,983 225,210 227,846 209,938                      
Percentage of occupancy rate of property leased out       79.00% 85.00% 86.00% 79.00%                      
Shenzhen Kaicheng Architecture and Decoration Co, Ltd. ("SZKC") | Shenzhen office                                    
Operating Leased Assets [Line Items]                                    
Lease expiration term             24 months             14 months        
Dongguan Nam Tai Real Estate Development Co., Ltd. ("NTDG") | Dongguan office                                    
Operating Leased Assets [Line Items]                                    
Lease expiration term                             35 months      
Dongguan Nam Tai Real Estate Development Co., Ltd. ("NTDG") | Dongguan Canteen                                    
Operating Leased Assets [Line Items]                                    
Lease expiration term                       12 months 24 months