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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
Note 7 - Customer and Geographic Information (Details) - Long-lived Assets by Geographic Area [Line Items]
Long-lived assets, net, by geographical area	$ 9,895us-gaap_AssetsNoncurrent	$ 8,832us-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	9,319us-gaap_AssetsNoncurrent / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember	8,240us-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	$ 576us-gaap_AssetsNoncurrent / us-gaap_StatementGeographicalAxis = pdfs_RestOfTheWorldMember	$ 592us-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

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