2.4.0.6 Html 84 227 1 false 28 0 false 4 false false R1.htm 000 - Disclosure - Document And Entity Information Sheet http://www.pdf.com/role/DocumentAndEntityInformation Document And Entity Information true false R2.htm 001 - Statement - Condensed Consolidated Balance Sheets (unaudited) Sheet http://www.pdf.com/role/ConsolidatedBalanceSheet Condensed Consolidated Balance Sheets (unaudited) false false R3.htm 002 - Statement - Condensed Consolidated Balance Sheets (unaudited) (Parentheticals) Sheet http://www.pdf.com/role/ConsolidatedBalanceSheet_Parentheticals Condensed Consolidated Balance Sheets (unaudited) (Parentheticals) false false R4.htm 003 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (unaudited) Sheet http://www.pdf.com/role/ConsolidatedIncomeStatement Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (unaudited) false false R5.htm 004 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited) Sheet http://www.pdf.com/role/ConsolidatedCashFlow Condensed Consolidated Statements of Cash Flows (unaudited) false false R6.htm 005 - Disclosure - Note 1 - Basis of Presentation Sheet http://www.pdf.com/role/Note Note 1 - Basis of Presentation false false R7.htm 006 - Disclosure - Note 2 - Recent Accounting Pronouncements Sheet http://www.pdf.com/role/Note0 Note 2 - Recent Accounting Pronouncements false false R8.htm 007 - Disclosure - Note 3 - Balance Sheet Components Sheet http://www.pdf.com/role/Note00 Note 3 - Balance Sheet Components false false R9.htm 008 - Disclosure - Note 4 - Stockholders' Equity Sheet http://www.pdf.com/role/Note000 Note 4 - Stockholders' Equity false false R10.htm 009 - Disclosure - Note 5 - Restructuring Sheet http://www.pdf.com/role/Note0000 Note 5 - Restructuring false false R11.htm 010 - Disclosure - Note 6 - Income Taxes Sheet http://www.pdf.com/role/Note00000 Note 6 - Income Taxes false false R12.htm 011 - Disclosure - Note 7 - Net Income (Loss) Per Share Sheet http://www.pdf.com/role/Note000000 Note 7 - Net Income (Loss) Per Share false false R13.htm 012 - Disclosure - Note 8 - Customer and Geographic Information Sheet http://www.pdf.com/role/Note0000000 Note 8 - Customer and Geographic Information false false R14.htm 013 - Disclosure - Note 9 - Fair Value Sheet http://www.pdf.com/role/Note00000000 Note 9 - Fair Value false false R15.htm 014 - Disclosure - Note 10 - Commitments and Contingencies Sheet http://www.pdf.com/role/Note000000000 Note 10 - Commitments and Contingencies false false R16.htm 015 - Disclosure - Accounting Policies, by Policy (Policies) Sheet http://www.pdf.com/role/AccountingPoliciesByPolicy Accounting Policies, by Policy (Policies) false false R17.htm 016 - Disclosure - Note 3 - Balance Sheet Components (Tables) Sheet http://www.pdf.com/role/NoteTables Note 3 - Balance Sheet Components (Tables) false false R18.htm 017 - Disclosure - Note 4 - Stockholders' Equity (Tables) Sheet http://www.pdf.com/role/NoteTables0 Note 4 - Stockholders' Equity (Tables) false false R19.htm 018 - Disclosure - Note 5 - Restructuring (Tables) Sheet http://www.pdf.com/role/NoteTables00 Note 5 - Restructuring (Tables) false false R20.htm 019 - Disclosure - Note 7 - Net Income (Loss) Per Share (Tables) Sheet http://www.pdf.com/role/NoteTables000 Note 7 - Net Income (Loss) Per Share (Tables) false false R21.htm 020 - Disclosure - Note 8 - Customer and Geographic Information (Tables) Sheet http://www.pdf.com/role/NoteTables0000 Note 8 - Customer and Geographic Information (Tables) false false R22.htm 021 - Disclosure - Note 9 - Fair Value (Tables) Sheet http://www.pdf.com/role/NoteTables00000 Note 9 - Fair Value (Tables) false false R23.htm 022 - Disclosure - Note 10 - Commitments and Contingencies (Tables) Sheet http://www.pdf.com/role/NoteTables000000 Note 10 - Commitments and Contingencies (Tables) false false R24.htm 025 - Disclosure - Note 3 - Balance Sheet Components (Detail) Sheet http://www.pdf.com/role/NoteDetail00 Note 3 - Balance Sheet Components (Detail) false false R25.htm 026 - Disclosure - Note 3 - Balance Sheet Components (Detail) - Property and Equipment Sheet http://www.pdf.com/role/PropertyandEquipmentTable Note 3 - Balance Sheet Components (Detail) - Property and Equipment false false R26.htm 027 - Disclosure - Note 4 - Stockholders' Equity (Detail) Sheet http://www.pdf.com/role/NoteDetail000 Note 4 - Stockholders' Equity (Detail) false false R27.htm 028 - Disclosure - Note 4 - Stockholders' Equity (Detail) - Allocation of Recognized Period Costs Sheet http://www.pdf.com/role/AllocationofRecognizedPeriodCostsTable Note 4 - Stockholders' Equity (Detail) - Allocation of Recognized Period Costs false false R28.htm 029 - Disclosure - Note 4 - Stockholders' Equity (Detail) - Stock Options, Valuation Assumptions Sheet http://www.pdf.com/role/StockOptionsValuationAssumptionsTable Note 4 - Stockholders' Equity (Detail) - Stock Options, Valuation Assumptions false false R29.htm 030 - Disclosure - Note 4 - Stockholders' Equity (Detail) - Stock Options Activity Sheet http://www.pdf.com/role/StockOptionsActivityTable Note 4 - Stockholders' Equity (Detail) - Stock Options Activity false false R30.htm 031 - Disclosure - Note 4 - Stockholders' Equity (Detail) - Nonvested Restricted Stock Units Activity Sheet http://www.pdf.com/role/NonvestedRestrictedStockUnitsActivityTable Note 4 - Stockholders' Equity (Detail) - Nonvested Restricted Stock Units Activity false false R31.htm 032 - Disclosure - Note 5 - Restructuring (Detail) Sheet http://www.pdf.com/role/NoteDetail0000 Note 5 - Restructuring (Detail) false false R32.htm 033 - Disclosure - Note 5 - Restructuring (Detail) - Summary of Restructuring Liabilities Sheet http://www.pdf.com/role/SummaryofRestructuringLiabilitiesTable Note 5 - Restructuring (Detail) - Summary of Restructuring Liabilities false false R33.htm 034 - Disclosure - Note 5 - Restructuring (Detail) - Summary of Restructuring Liabilities Sheet http://www.pdf.com/role/SummaryofRestructuringLiabilitiesTable0 Note 5 - Restructuring (Detail) - Summary of Restructuring Liabilities false false R34.htm 035 - Disclosure - Note 6 - Income Taxes (Detail) Sheet http://www.pdf.com/role/NoteDetail00000 Note 6 - Income Taxes (Detail) false false R35.htm 037 - Disclosure - Note 7 - Net Income (Loss) Per Share (Detail) - Calculation of Earnings Per Share Sheet http://www.pdf.com/role/CalculationofEarningsPerShareTable Note 7 - Net Income (Loss) Per Share (Detail) - Calculation of Earnings Per Share false false R36.htm 038 - Disclosure - Note 7 - Net Income (Loss) Per Share (Detail) - Antidilutive Securities Sheet http://www.pdf.com/role/AntidilutiveSecuritiesTable Note 7 - Net Income (Loss) Per Share (Detail) - Antidilutive Securities false false R37.htm 039 - Disclosure - Note 8 - Customer and Geographic Information (Detail) Sheet http://www.pdf.com/role/NoteDetail0000000 Note 8 - Customer and Geographic Information (Detail) false false R38.htm 040 - Disclosure - Note 8 - Customer and Geographic Information (Detail) - Revenue Percentage by Major Customers Sheet http://www.pdf.com/role/RevenuePercentagebyMajorCustomersTable Note 8 - Customer and Geographic Information (Detail) - Revenue Percentage by Major Customers false false R39.htm 041 - Disclosure - Note 8 - Customer and Geographic Information (Detail) - Receivables Percentage by Major Customers Sheet http://www.pdf.com/role/ReceivablesPercentagebyMajorCustomersTable Note 8 - Customer and Geographic Information (Detail) - Receivables Percentage by Major Customers false false R40.htm 042 - Disclosure - Note 8 - Customer and Geographic Information (Detail) - Revenue by Geographical Areas Sheet http://www.pdf.com/role/RevenuebyGeographicalAreasTable Note 8 - Customer and Geographic Information (Detail) - Revenue by Geographical Areas false false R41.htm 043 - Disclosure - Note 8 - Customer and Geographic Information (Detail) - Long-lived Assets, by Geographical Areas Sheet http://www.pdf.com/role/LonglivedAssetsbyGeographicalAreasTable Note 8 - Customer and Geographic Information (Detail) - Long-lived Assets, by Geographical Areas false false R42.htm 045 - Disclosure - Note 9 - Fair Value (Detail) - Fair Value, Assets Measured on Recurring Basis Sheet http://www.pdf.com/role/FairValueAssetsMeasuredonRecurringBasisTable Note 9 - Fair Value (Detail) - Fair Value, Assets Measured on Recurring Basis false false R43.htm 046 - Disclosure - Note 10 - Commitments and Contingencies (Detail) Sheet http://www.pdf.com/role/NoteDetail000000000 Note 10 - Commitments and Contingencies (Detail) false false R44.htm 047 - Disclosure - Note 10 - Commitments and Contingencies (Detail) - Future Minimum Lease Payments Under Noncancelable Operating Leases Sheet http://www.pdf.com/role/FutureMinimumLeasePaymentsUnderNoncancelableOperatingLeasesTable Note 10 - Commitments and Contingencies (Detail) - Future Minimum Lease Payments Under Noncancelable Operating Leases false false All Reports Book All Reports Element us-gaap_RestructuringCharges had a mix of decimals attribute values: -3 0. Element us-gaap_RestructuringReserve had a mix of decimals attribute values: -5 -3. Element us-gaap_ShareBasedCompensation had a mix of decimals attribute values: -5 -3. Element us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod had a mix of decimals attribute values: -5 -3. Element us-gaap_StockRepurchasedDuringPeriodShares had a mix of decimals attribute values: -5 0. 'Monetary' elements on report '003 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (unaudited)' had a mix of different decimal attribute values. 'Monetary' elements on report '025 - Disclosure - Note 3 - Balance Sheet Components (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '027 - Disclosure - Note 4 - Stockholders' Equity (Detail)' had a mix of different decimal attribute values. 'Monetary' elements on report '035 - Disclosure - Note 6 - Income Taxes (Detail)' had a mix of different decimal attribute values. Process Flow-Through: 001 - Statement - Condensed Consolidated Balance Sheets (unaudited) Process Flow-Through: Removing column 'Mar. 31, 2012' Process Flow-Through: Removing column 'Dec. 31, 2011' Process Flow-Through: 002 - Statement - Condensed Consolidated Balance Sheets (unaudited) (Parentheticals) Process Flow-Through: 003 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (unaudited) Process Flow-Through: 004 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited) pdfs-20130331.xml pdfs-20130331.xsd pdfs-20130331_cal.xml pdfs-20130331_def.xml pdfs-20130331_lab.xml pdfs-20130331_pre.xml true true