v3.26.1
COVER PAGE - shares
6 Months Ended
Jun. 30, 2026
Aug. 03, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 000-23441  
Entity Registrant Name POWER INTEGRATIONS, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 94-3065014  
Entity Address, Address Line One 5245 Hellyer Avenue  
Entity Address, City or Town San Jose  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 95138  
City Area Code 408  
Local Phone Number 414-9200  
Title of 12(b) Security Common Stock  
Trading Symbol POWI  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   55,873,298
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Entity Central Index Key 0000833640  
Amendment Flag false