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Nature of Business and Summary of Significant Accounting Policies (Narrative) (Details) | 3 Months Ended | 12 Months Ended |  |  |  |  |
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Nov. 30, 2019 USD ($) | Nov. 30, 2018 USD ($) | Nov. 30, 2020 USD ($) software_vendor enterprise_customer developer | Nov. 30, 2019 USD ($) | Nov. 30, 2018 USD ($) | Aug. 31, 2019 USD ($) | Feb. 28, 2019 USD ($) | Dec. 01, 2018 USD ($) | Dec. 01, 2017 USD ($) | Nov. 30, 2017 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of independent software vendors, more than | software_vendor |  |  |  | 1,700 |  |  |  |  |  |  |  |  |
Number of enterprise customers, more than | enterprise_customer |  |  |  | 100,000 |  |  |  |  |  |  |  |  |
Number of developers, more than | developer |  |  |  | 3 |  |  |  |  |  |  |  |  |
Capitalized software development costs | $ 0 | $ 0 |  | $ 0 | $ 0 | $ 0 |  |  |  |  |  |  |
Amortization |  |  |  | 28,621,000 | 49,127,000 | 37,561,000 | [1] |  |  |  |  |  |
Impairment of goodwill and intangible assets |  |  |  | 0 | 0 | 0 |  |  |  |  |  |  |
Long-lived asset impairment charges | 1,400,000 | 5,100,000 |  | 0 | 0 | 5,147,000 | [1],[2] |  |  |  |  |  |
Other comprehensive income (loss), tax |  |  |  | 1,600,000 | 400,000 |  |  |  |  |  |  |  |
Advertising costs |  |  |  | 500,000 | 800,000 | 1,400,000 |  |  |  |  |  |  |
Acquisition-related expenses |  |  |  | 3,637,000 | 1,658,000 | 258,000 | [2] |  |  |  |  |  |
Restructuring related costs |  |  |  | 5,906,000 | 6,331,000 | 2,251,000 | [2] |  |  |  |  |  |
Other assets, noncurrent | (3,532,000) |  |  | (6,299,000) | (3,532,000) |  |  |  |  |  |  |  |
Deferred tax assets | 18,601,000 | 966,000 |  | 14,490,000 | 18,601,000 | 966,000 |  |  |  |  |  |  |
Stockholders' equity attributable to parent | 330,282,000 | 324,002,000 | [3] | 346,013,000 | 330,282,000 | 324,002,000 | [3] |  |  |  |  | $ 404,381,000 | [3]
Decrease in deferred revenue | (177,246,000) |  |  | (193,295,000) | (177,246,000) |  |  |  |  |  |  |  |
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity attributable to parent |  | 4,781,000 |  |  |  | 4,781,000 |  |  |  |  |  | 0 |
Retained Earnings |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity attributable to parent | $ 64,303,000 | 85,125,000 | [3] | $ 72,547,000 | 64,303,000 | 85,125,000 | [3] |  |  |  |  | 172,951,000 | [3]
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity attributable to parent |  | $ 4,781,000 |  |  |  | 4,781,000 |  |  |  |  |  | $ (641,000) |
Accounting Standards Update 2016-16 |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other assets, noncurrent |  |  |  |  |  |  |  |  |  | $ 3,400,000 |  |  |
Deferred tax assets |  |  |  |  |  |  |  | $ 8,200,000 | $ 8,200,000 |  |  |  |
Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in deferred revenue |  |  |  |  |  |  |  |  |  |  | $ 15,000,000 |  |
Increase in unbilled receivables |  |  |  |  |  |  |  |  |  |  | 28,000,000 |  |
Increase in deferred tax liabilities |  |  |  |  |  |  |  |  |  |  | 12,000,000 |  |
Accounting Standards Update 2014-09 | Retained Earnings |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity attributable to parent |  |  |  |  |  |  |  |  |  |  | $ 31,000,000 |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation service period |  |  |  | 3 years |  |  |  |  |  |  |  |  |
Software licenses |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Period of payments of licenses upon execution of contract |  |  |  | 30 days |  |  |  |  |  |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on disposal |  |  |  |  | 100,000 |  |  |  |  |  |  |  |
Modulus | Purchased Technology |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of software development costs |  |  |  |  | 22,700,000 |  |  |  |  |  |  |  |
Minimum | Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation service period |  |  |  | 4 years |  |  |  |  |  |  |  |  |
Minimum | Software licenses |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected timing of satisfaction, period |  |  |  | 1 year |  |  |  |  |  |  |  |  |
Minimum | Maintenance |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected timing of satisfaction, period |  |  |  | 1 year |  |  |  |  |  |  |  |  |
Minimum | Services |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected timing of satisfaction, period |  |  |  | 1 year |  |  |  |  |  |  |  |  |
Maximum | Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation service period |  |  |  | 5 years |  |  |  |  |  |  |  |  |
Maximum | Software licenses |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected timing of satisfaction, period |  |  |  | 3 years |  |  |  |  |  |  |  |  |
Maximum | Maintenance |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected timing of satisfaction, period |  |  |  | 3 years |  |  |  |  |  |  |  |  |
Maximum | Services |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected timing of satisfaction, period |  |  |  | 3 years |  |  |  |  |  |  |  |  |
Computer equipment and software | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  | 3 years |  |  |  |  |  |  |  |  |
Computer equipment and software | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  | 7 years |  |  |  |  |  |  |  |  |
Buildings and Improvements | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  | 5 years |  |  |  |  |  |  |  |  |
Buildings and Improvements | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  | 39 years |  |  |  |  |  |  |  |  |
Furniture and fixtures | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  | 5 years |  |  |  |  |  |  |  |  |
Furniture and fixtures | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  | 7 years |  |  |  |  |  |  |  |  |
Internal Use Software |  |  |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  | 3 years |  |  |  |  |  |  |  |  |
Amortization |  |  |  | $ 0 | $ 0 | $ 200,000 |  |  |  |  |  |  |
[1] | (1)The Company adopted the accounting standard related to revenue recognition ("ASC 606") effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Summary of Significant Accounting Policies for further information.
[2] | (1)The Company adopted the accounting standard related to revenue recognition ("ASC 606") effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Summary of Significant Accounting Policies for further information.
[3] | (1)The Company adopted the accounting standard related to revenue recognition ("ASC 606") effective December 1, 2018 using the full retrospective method. See Note 1. Nature of Business and Summary of Significant Accounting Policies for further information.

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