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Nature Of Business And Summary Of Significant Accounting Policies (Narrative) (Details) (USD $) | 3 Months Ended | 12 Months Ended | 24 Months Ended
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Nov. 30, 2014 Segments | Aug. 31, 2014 | Nov. 30, 2014 | Nov. 30, 2013 | Nov. 30, 2012 | Nov. 30, 2013 product_lines
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of product lines divested |  |  |  |  |  | 11 prgs_DisposalGroupIncludingDiscontinuedOperationNumberOfProductLines
Number of reportable segments | 3 us-gaap_NumberOfReportableSegments |  |  |  |  |
Redemptions and sales of auction rate securities - available-for-sale |  | $ 26,200,000 prgs_RedemptionsOfAuctionRateSecuritiesAvailableForSale | $ 26,196,000 prgs_RedemptionsOfAuctionRateSecuritiesAvailableForSale | $ 25,000 prgs_RedemptionsOfAuctionRateSecuritiesAvailableForSale | $ 8,955,000 prgs_RedemptionsOfAuctionRateSecuritiesAvailableForSale |
Realized loss on sale of auction rate securities |  | 2,600,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet |  |  |  |
Capitalized software development costs | (4,100,000)us-gaap_CapitalizedComputerSoftwareGross |  | (4,100,000)us-gaap_CapitalizedComputerSoftwareGross | (800,000)us-gaap_CapitalizedComputerSoftwareGross | 0 us-gaap_CapitalizedComputerSoftwareGross | (800,000)us-gaap_CapitalizedComputerSoftwareGross
Amortization |  |  | 5,521,000 us-gaap_AdjustmentForAmortization | 4,090,000 us-gaap_AdjustmentForAmortization | 21,660,000 us-gaap_AdjustmentForAmortization |
Long-lived assets impairment charge |  |  | 0 us-gaap_OtherAssetImpairmentCharges | 111,000 us-gaap_OtherAssetImpairmentCharges | 898,000 us-gaap_OtherAssetImpairmentCharges |
Income tax expense |  |  | 28,346,000 us-gaap_IncomeTaxExpenseBenefit | 23,006,000 us-gaap_IncomeTaxExpenseBenefit | 23,031,000 us-gaap_IncomeTaxExpenseBenefit |
Tax effect on accumulated unrealized losses on investment |  |  |  | 1,400,000 prgs_TaxEffectOnAccumulatedUnrealizedLossesOnInvestment | 1,500,000 prgs_TaxEffectOnAccumulatedUnrealizedLossesOnInvestment | 1,400,000 prgs_TaxEffectOnAccumulatedUnrealizedLossesOnInvestment
Advertising costs |  |  | 1,800,000 us-gaap_AdvertisingExpense | 1,600,000 us-gaap_AdvertisingExpense | 1,500,000 us-gaap_AdvertisingExpense |
Acquisition-related expenses |  |  | 5,862,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts | 3,204,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts | 215,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts |
Internal Use Software [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful lives of major asset |  |  | 3 years |  |  |
Amortization |  |  | 700,000 us-gaap_AdjustmentForAmortization / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember | 0 us-gaap_AdjustmentForAmortization / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember | 0 us-gaap_AdjustmentForAmortization / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Stock-based compensation service period |  |  | 3 years |  |  |
Minimum [Member] | Computer equipment and software [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful lives of major asset |  |  | 3 years |  |  |
Minimum [Member] | Buildings And Improvements [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful lives of major asset |  |  | 5 years |  |  |
Minimum [Member] | Furniture and fixtures [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful lives of major asset |  |  | 5 years |  |  |
Minimum [Member] | Stock Options [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Stock-based compensation service period |  |  | 4 years |  |  |
Maximum [Member] | Computer equipment and software [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful lives of major asset |  |  | 7 years |  |  |
Maximum [Member] | Buildings And Improvements [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful lives of major asset |  |  | 39 years |  |  |
Maximum [Member] | Furniture and fixtures [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful lives of major asset |  |  | 7 years |  |  |
Maximum [Member] | Stock Options [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Stock-based compensation service period |  |  | 5 years |  |  |
Revenue [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk, number of customers |  |  | 0 prgs_ConcentrationRiskNumberofCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember | 0 prgs_ConcentrationRiskNumberofCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember | 0 prgs_ConcentrationRiskNumberofCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember |
Accounts Receivable [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Concentration risk, number of customers |  |  | 0 prgs_ConcentrationRiskNumberofCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember | 0 prgs_ConcentrationRiskNumberofCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember | 0 prgs_ConcentrationRiskNumberofCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember |
Unrealized Gains (Losses) on Investments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Income tax expense |  |  | $ 900,000 us-gaap_IncomeTaxExpenseBenefit / us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis = us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |  |  |

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