SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUE (Customer and Credit Risk Concentration) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($) customer	Dec. 31, 2024 USD ($) customer	Dec. 31, 2023 USD ($) customer
Concentration Risk [Line Items]
NET REVENUE \| $	$ 443,504	$ 418,973	$ 444,538
Distributors
Concentration Risk [Line Items]
NET REVENUE \| $	$ 304,600	$ 292,900	$ 307,400
Credit concentration risk \| Accounts receivable
Concentration Risk [Line Items]
Number of major customers \| customer	10	10
Credit concentration risk \| Accounts receivable \| Avnet
Concentration Risk [Line Items]
Concentration risk percentage	32.00%	32.00%
Credit concentration risk \| Accounts receivable \| Salcomp Group
Concentration Risk [Line Items]
Concentration risk percentage	18.00%	13.00%
Credit concentration risk \| Accounts receivable \| Honestar Technologies Co., Ltd.
Concentration Risk [Line Items]
Concentration risk percentage	11.00%	12.00%
Credit concentration risk \| Accounts receivable \| Ten Customers
Concentration Risk [Line Items]
Concentration risk percentage	89.00%	87.00%
Customer concentration risk \| Net revenue
Concentration Risk [Line Items]
Number of major customers \| customer	10	10	10
Concentration risk, percentage of total net revenue	81.00%	79.00%	80.00%
Customer concentration risk \| Net revenue \| Avnet
Concentration Risk [Line Items]
Concentration risk, percentage of total net revenue	32.00%	30.00%	27.00%
Customer concentration risk \| Net revenue \| Salcomp Group
Concentration Risk [Line Items]
Concentration risk, percentage of total net revenue	11.00%		10.00%
Customer concentration risk \| Net revenue \| Honestar Technologies Co., Ltd.
Concentration Risk [Line Items]
Concentration risk, percentage of total net revenue		11.00%	18.00%

POWER INTEGRATIONS INC 10-K