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Note 7 - Customer and Geographic Information (Details) - Long-lived Assets by Geographic Area (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Note 7 - Customer and Geographic Information (Details) - Long-lived Assets by Geographic Area [Line Items] |  |
Long-lived assets, net, by geographical area | $ 9,895 us-gaap_AssetsNoncurrent | $ 8,832 us-gaap_AssetsNoncurrent
North America [Member] |  |
Note 7 - Customer and Geographic Information (Details) - Long-lived Assets by Geographic Area [Line Items] |  |
Long-lived assets, net, by geographical area | 9,319 us-gaap_AssetsNoncurrent / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 8,240 us-gaap_AssetsNoncurrent / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember
Rest of the World [Member] |  |
Note 7 - Customer and Geographic Information (Details) - Long-lived Assets by Geographic Area [Line Items] |  |
Long-lived assets, net, by geographical area | $ 576 us-gaap_AssetsNoncurrent / us-gaap_StatementGeographicalAxis = pdfs_RestOfTheWorldMember | $ 592 us-gaap_AssetsNoncurrent / us-gaap_StatementGeographicalAxis = pdfs_RestOfTheWorldMember

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.10-17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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