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Note 10 - CUSTOMER AND GEOGRAPHIC INFORMATION - Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Long-lived assets, net | $ 43,630 | $ 40,703
UNITED STATES |  |
Long-lived assets, net | 42,288 | 39,158
Rest of the World [Member] |  |
Long-lived assets, net | $ 1,342 | $ 1,545

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 + Details
Name: | us-gaap_NoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementGeographicalAxis=pdfs_RestOfTheWorldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |