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Business Combinations (Acquisition Consideration For The Transaction) (Details) (Raid Software License [Member], USD $)
In Thousands, unless otherwise specified
Dec. 27, 2014
Business Acquisition [Line Items]  
Contingent purchase consideration $ 10,000us-gaap_BusinessCombinationContingentConsiderationLiability
January 10, 2015 [Member]
  
Business Acquisition [Line Items]  
Contingent purchase consideration 18,000us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= pmcs_RaidSoftwareLicenseMember
/ us-gaap_ContingentConsiderationByTypeAxis
= pmcs_Date1Member
January 10, 2016 [Member]
  
Business Acquisition [Line Items]  
Contingent purchase consideration 12,000us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= pmcs_RaidSoftwareLicenseMember
/ us-gaap_ContingentConsiderationByTypeAxis
= pmcs_Date2Member
January 10, 2017 [Member]
  
Business Acquisition [Line Items]  
Contingent purchase consideration $ 12,000us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= pmcs_RaidSoftwareLicenseMember
/ us-gaap_ContingentConsiderationByTypeAxis
= pmcs_Date3Member