XML 53 R41.htm IDEA: XBRL DOCUMENT
v3.8.0.1

STOCK-BASED COMPENSATION Stock-Based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations: |  |  |  |
Stock-Based Compensation Expense | $ 6,526 | $ 5,789 | $ 17,822 | $ 15,217
Stock Options |  |  |  |
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations: |  |  |  |
Stock-Based Compensation Expense |  |  |  | 200
Performance Based Awards and Long Term Performance-based Units |  |  |  |
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations: |  |  |  |
Stock-Based Compensation Expense | 2,200 | 2,100 | 5,700 | 4,400
Restricted Stock Units (RSUs) |  |  |  |
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations: |  |  |  |
Stock-Based Compensation Expense | 4,000 | 3,400 | 11,200 | 9,700
Employee Stock Purchase Plan |  |  |  |
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations: |  |  |  |
Stock-Based Compensation Expense | 300 | 300 | 900 | 900
Cost of revenues |  |  |  |
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations: |  |  |  |
Stock-Based Compensation Expense | 391 | 348 | 885 | 731
Research and development |  |  |  |
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations: |  |  |  |
Stock-Based Compensation Expense | 2,173 | 1,934 | 6,158 | 5,343
Sales and marketing |  |  |  |
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations: |  |  |  |
Stock-Based Compensation Expense | 1,441 | 1,303 | 3,727 | 3,229
General and administrative |  |  |  |
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations: |  |  |  |
Stock-Based Compensation Expense | $ 2,521 | $ 2,204 | $ 7,052 | $ 5,914

X
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=powi_PerformanceBasedAwardsandLongTermPerformancebasedUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_ResearchAndDevelopmentExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SellingAndMarketingExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |