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Shareholders' Equity and Share-Based Compensation (Details Textual) (USD $)
9 Months Ended 3 Months Ended 9 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Mar. 29, 2014
Shareholders' Equity and Share-Based Compensation (Textual)      
Purchase, Weighted average price $ 6.80us-gaap_EmployeeStockOwnershipPlanESOPWeightedAveragePurchasePriceOfSharesPurchased    
Board of Directors [Member]      
Shareholders' Equity and Share-Based Compensation (Textual)      
Preferred stock, shares authorized 5,000,000us-gaap_PreferredStockSharesAuthorized
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
   
Preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
   
Restricted Stock Units (RSUs) [Member]      
Shareholders' Equity and Share-Based Compensation (Textual)      
Options vesting period 4 years    
Number of shares awarded during the period 305,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
   
Restricted stock 51,000us-gaap_WeightedAverageNumberOfSharesRestrictedStock
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
   
Performance Stock Units [Member]      
Shareholders' Equity and Share-Based Compensation (Textual)      
Options vesting period 12 months    
Number of shares awarded during the period 113,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
   
Restricted Stock Units And Performance Stock Units [Member]      
Shareholders' Equity and Share-Based Compensation (Textual)      
Preferred stock, shares issued 13,000us-gaap_PreferredStockSharesIssued
/ us-gaap_AwardTypeAxis
= psem_RestrictedStockUnitsAndPerformanceStockUnitsMember
   
Unamortized sharebased compensation expense $ 5,200,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_AwardTypeAxis
= psem_RestrictedStockUnitsAndPerformanceStockUnitsMember
   
Weighted average period of recognition 2 years 4 months 24 days    
Number of shares awarded during the period 418,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= psem_RestrictedStockUnitsAndPerformanceStockUnitsMember
   
RUS's outstanding, Forfeited 63,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= psem_RestrictedStockUnitsAndPerformanceStockUnitsMember
   
Stock Option Plan [Member]      
Shareholders' Equity and Share-Based Compensation (Textual)      
Number of stock option plan 3psem_NumberOfStockOptionPlan
/ us-gaap_PlanNameAxis
= psem_StockPurchasePlanMember
   
Reserve of common stock for issuance to employees and officers 6,500,000psem_ReserveOfCommonStockForIssuanceToEmployeesAndOfficers
/ us-gaap_PlanNameAxis
= psem_StockPurchasePlanMember
   
Options vesting period 48 months    
Option expiration period 10 years    
Unamortized sharebased compensation expense 907,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_PlanNameAxis
= psem_StockPurchasePlanMember
   
Weighted average period of recognition 2 years 4 months 24 days    
Shares available for future grant 3,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= psem_StockPurchasePlanMember
   
Aggregate intrinsic value of options exercised 2,600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
/ us-gaap_PlanNameAxis
= psem_StockPurchasePlanMember
   
Weighted average fair value of options granted   $ 4.62us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= psem_StockPurchasePlanMember
 
2010 Employee stock purchase plan [Member]      
Shareholders' Equity and Share-Based Compensation (Textual)      
Reserve of common stock for issuance to employees and officers 2,000,000psem_ReserveOfCommonStockForIssuanceToEmployeesAndOfficers
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember
   
Unamortized sharebased compensation expense 21,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember
   
Shares available for future grant 1,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember
   
Weighted average fair value of options granted $ 2.60us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember
  $ 1.65us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember
Purchase option for participants in purchase period 85% of the lower of the stock's fair market value on the first day and last day of the offering period.    
Maximum number of common stock by employees in purchase period 1,500psem_MaximumNumberOfCommonStockByEmployeesInPurchasePeriod
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember
   
Maximum amount that can be accrued in offering periog for stock purchased $ 15,000psem_MaximumAmountThatCanBeAccruedInOfferingPeriogForStockPurchased
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember
   
Common stock issued under stock purchase plan 61,217us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember
  69,399us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember
Purchase, Weighted average price $ 6.80us-gaap_EmployeeStockOwnershipPlanESOPWeightedAveragePurchasePriceOfSharesPurchased
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember
  $ 5.51us-gaap_EmployeeStockOwnershipPlanESOPWeightedAveragePurchasePriceOfSharesPurchased
/ us-gaap_PlanNameAxis
= psem_EmployeeStockPurchasePlanMember