XML 36 R50.htm IDEA: XBRL DOCUMENT v2.4.1.9
Stock-Based Compensation (Schedule Of Fair Value Assumptions) (Details)
 12 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected life (years) 6 months 6 months 6 months
Expected volatility 35.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_PlanNameAxis
= pmcs_EmployeeStockPurchasePlanMember		 35.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_PlanNameAxis
= pmcs_EmployeeStockPurchasePlanMember		 42.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_PlanNameAxis
= pmcs_EmployeeStockPurchasePlanMember
Risk-free interest rate 0.50%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_PlanNameAxis
= pmcs_EmployeeStockPurchasePlanMember		 0.10%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_PlanNameAxis
= pmcs_EmployeeStockPurchasePlanMember		 0.20%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_PlanNameAxis
= pmcs_EmployeeStockPurchasePlanMember
Forfeiture rate 9.50%pmcs_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate
/ us-gaap_PlanNameAxis
= pmcs_EmployeeStockPurchasePlanMember		 8.50%pmcs_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate
/ us-gaap_PlanNameAxis
= pmcs_EmployeeStockPurchasePlanMember		 12.10%pmcs_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate
/ us-gaap_PlanNameAxis
= pmcs_EmployeeStockPurchasePlanMember
Stock Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected life (years) 5 years 9 months 18 days 5 years 10 months 24 days 5 years 4 months 24 days
Expected volatility 32.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 40.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 42.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Risk-free interest rate 1.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 1.60%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 0.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Forfeiture rate 9.50%pmcs_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 8.50%pmcs_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 12.10%pmcs_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember