XML 51 R40.htm IDEA: XBRL DOCUMENT
v3.10.0.1

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, 2018 USD ($) Customer | Sep. 30, 2017 USD ($) Customer | Sep. 30, 2018 USD ($) Customer | Sep. 30, 2017 USD ($) Customer | Dec. 31, 2017 Customer
Concentration Risk [Line Items] |  |  |  |  |
NET REVENUES | $ | $ 110,085 | $ 111,255 | $ 322,648 | $ 323,506 |
Distributors [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
NET REVENUES | $ | $ 83,300 | $ 83,200 | $ 245,400 | $ 249,300 |
Sales Revenue, Goods, Net | Customer Concentration Risk [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Number of major customers | 1 | 1 | 1 | 1 |
Concentration risk percentage benchmark | 10.00% | 10.00% | 10.00% | 10.00% |
Sales Revenue, Goods, Net | Customer Concentration Risk [Member] | Avnet |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage of total net revenues | 14.00% | 15.00% | 14.00% | 16.00% |
Sales Revenue, Goods, Net | Customer Concentration Risk [Member] | Ten Customers |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Number of major customers | 10 | 10 | 10 | 10 |
Concentration risk, percentage of total net revenues | 56.00% | 56.00% | 57.00% | 55.00% |
Accounts Receivable | Credit Concentration Risk [Member] |  |  |  |  |
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 [Member] | Avnet |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage benchmark | 20.00% |  | 20.00% |  | 18.00%
Accounts Receivable | Credit Concentration Risk [Member] | Ten Customers |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage benchmark | 67.00% |  | 67.00% |  | 64.00%
Accounts Receivable | Credit Concentration Risk [Member] | Kei Kong Electronics [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage benchmark | 12.00% |  | 12.00% |  |

X
- Definition Concentration risk percentage benchmark for total accounts receivable + References No definition available. + Details
Name: | powi_ConcentrationRiskPercentageBenchmarkForTotalAccountsReceivable
Namespace Prefix: | powi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Customer Concentration Risk Percentage Of Total Net Revenue + References No definition available. + Details
Name: | powi_ConcentrationRiskPercentageOfNetRevenue
Namespace Prefix: | powi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Major Customers + References No definition available. + Details
Name: | powi_NumberOfMajorCustomers
Namespace Prefix: | powi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ConcentrationRiskLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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=84177426&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=77997519&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=84177426&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=77997519&loc=d3e13537-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + 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_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_MajorCustomersAxis=powi_DistributorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueGoodsNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=powi_AvnetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=powi_TenCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=powi_KeiKongElectronicsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |