Concentration risk percentage benchmark for total accounts receivable

No definition available.

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- Definition

Customer Concentration Risk Percentage Of Total Net Revenue

+ References

No definition available.

+ Details

Name:	powi_ConcentrationRiskPercentageOfNetRevenue
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Period Type:	duration

- Definition

Number Of Major Customers

+ References

No definition available.

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Name:	powi_NumberOfMajorCustomers
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Data Type:	xbrli:integerItemType
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
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Period Type:	duration

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesRevenueNet
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_MajorCustomersAxis=powi_DistributorsMember
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- Details

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- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
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- Details

Name:	us-gaap_MajorCustomersAxis=powi_AvnetMember
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- Details

Name:	us-gaap_MajorCustomersAxis=powi_PowertechDistributionLtd.Member
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- Details

Name:	us-gaap_MajorCustomersAxis=powi_TenCustomersMember
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- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
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- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
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- Details

Name:	us-gaap_MajorCustomersAxis=powi_ATMElectronicCorporationMember
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SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUES Customer and Credit Risk Concentration (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017 USD ($) Customer	Sep. 30, 2016 USD ($) Customer	Sep. 30, 2017 USD ($) Customer	Sep. 30, 2016 USD ($) Customer	Dec. 31, 2016 Customer
Concentration Risk [Line Items]
Net Revenues \| $	$ 111,255	$ 101,625	$ 323,506	$ 287,232
Distributors
Concentration Risk [Line Items]
Net Revenues \| $	$ 83,200	$ 75,600	$ 249,300	$ 215,900
Sales Revenue, Goods, Net \| Customer Concentration Risk
Concentration Risk [Line Items]
Number of major customers	1	1	1	2
Concentration risk percentage benchmark	10.00%	10.00%	10.00%	10.00%
Sales Revenue, Goods, Net \| Customer Concentration Risk \| Avnet
Concentration Risk [Line Items]
Concentration risk, percentage of total net revenues	15.00%	18.00%	16.00%	20.00%
Sales Revenue, Goods, Net \| Customer Concentration Risk \| Powertech Distribution Ltd.
Concentration Risk [Line Items]
Concentration risk, percentage of total net revenues				11.00%
Sales Revenue, Goods, Net \| Customer Concentration Risk \| Ten Customers
Concentration Risk [Line Items]
Number of major customers	10	10	10	10
Concentration risk, percentage of total net revenues	56.00%	60.00%	55.00%	61.00%
Accounts Receivable \| Credit Concentration Risk
Concentration Risk [Line Items]
Number of major customers	10		10		10
Concentration risk percentage benchmark for accounts receivable (more than)	10.00%		10.00%		10.00%
Accounts Receivable \| Credit Concentration Risk \| Avnet
Concentration Risk [Line Items]
Concentration risk percentage benchmark	17.00%		17.00%		25.00%
Accounts Receivable \| Credit Concentration Risk \| Ten Customers
Concentration Risk [Line Items]
Concentration risk percentage benchmark			66.00%		70.00%
Accounts Receivable \| Credit Concentration Risk \| ATM Electronic Corporation
Concentration Risk [Line Items]
Concentration risk percentage benchmark					13.00%