v3.26.1
Geographic and Other Information - Additional Information (Detail) - Segments
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Revenues from External Customers and Long-Lived Assets [Line Items]          
Segments     1    
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]     srt:ChiefExecutiveOfficerMember    
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description     The Chief Executive Officer, as the chief operating decision maker (“CODM”), organizes the Company and measures performance of two business lines of Power Analog Solutions and Power IC in the Power Solutions business at the level of revenue and gross profit margin by comparing actual results against previously forecasted targets.    
Customer Concentration Risk [Member] | Net Sales [Member] | Top Ten Customers [Member] | Power solutions business          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Concentration risk, percentage 73.30% 74.40% 73.20% 74.00%  
Customer Concentration Risk [Member] | Net Sales [Member] | Top Customer One [Member] | Power solutions business          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Concentration risk, percentage 26.50% 29.40% 28.80% 31.10%  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Top Customer One [Member] | Power solutions business          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Concentration risk, percentage 44.10%   44.10%   35.40%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Top Customer Two [Member] | Power solutions business          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Concentration risk, percentage         15.70%
Geographic Concentration Risk [Member] | Net Sales [Member] | Taiwan [Member] | Power solutions business          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Concentration risk, percentage 9.90% 10.70% 10.40% 11.00%  
Geographic Concentration Risk [Member] | Net Sales [Member] | Greater China (China and Hong Kong) [Member] | Power solutions business          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Concentration risk, percentage 81.70% 80.80% 82.70% 81.90%