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Employee stock purchase plan offering period

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Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans for which Shareholder Approval Not Required

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Share-based Compensation Arrangement by Share-based Payment Award, Number of Shareholder Approved Stock Plans

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Shares available and reserved for issuance under employee stock purchase plan

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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The weighted average of per share prices paid for shares purchased on the open market for issuance to employees under the plan.

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Price of a single share of a number of saleable stocks of a company.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Purchase price of common stock expressed as a percentage of its fair value.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Stock-Based Compensation (Narrative) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Nov. 30, 2015 USD ($) period plan $ / shares Executives shares	Nov. 30, 2014 USD ($) $ / shares Executives shares	Nov. 30, 2013 USD ($) $ / shares Executives shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shareholder approved stock plans \| plan	1
Number of plans for which shareholder approval not required \| plan	2
Closing stock price on November 30, 2015 (in dollars per share) \| $ / shares	$ 23.99
Unrecognized stock-based compensation expense, net of expected forfeitures \| $	$ 25,000
Costs are expected to be recognized, weighted average period	1 year 8 months 12 days
Number of executives whose employment was terminated \| Executives	3	2	5
Total stock-based compensation \| $	$ 24,004	$ 24,873	$ 21,399
Additional stock-based compensation expenses related to separation and acceleration vesting \| $	$ 300	$ 1,200
2008 Stock Option And Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issuable under stock plans (in shares)	54,510,000
Shares available for grant under stock plans (in shares)	5,678,772
2002 Nonqualified Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issuable under stock plans (in shares)	9,750,000
Shares available for grant under stock plans (in shares)	857,973
2004 Inducement Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issuable under stock plans (in shares)	1,500,000
Shares available for grant under stock plans (in shares)	583,021
Stock Options Granted Prior To Fiscal 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (in years)	10 years
Stock Options Granted From Fiscal 2005 Through Fiscal 2010 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (in years)	7 years
Stock Options Granted In 2011 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (in years)	7 years
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issuable under stock plans (in shares)	8,650,000
ESPP offering period	27 months
ESPP number of purchase periods \| period	9
ESPP purchase price (as a percent)	85.00%
Employee stock purchase plan, issued shares (in shares)	226,000	203,000	281,000
Weighted average purchase price of shares (in dollars per share) \| $ / shares	$ 19.58	$ 17.84	$ 15.28
Shares available and reserved for issuance (in shares)	501,000
Weighted average estimated fair value of options granted, per share (in dollars per share) \| $ / shares	$ 6.89	$ 6.93	$ 6.88
General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation \| $	$ 13,149	$ 14,330	$ 10,186
Additional stock-based compensation expenses related to separation and acceleration vesting \| $	200	500
Sales and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation \| $	4,805	4,642	$ 3,599
Additional stock-based compensation expenses related to separation and acceleration vesting \| $	$ 100	$ 700
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (in years)	4 years 9 months 18 days	4 years 9 months 18 days	4 years 9 months 18 days
Risk-free interest rate (as a percent)	1.30%	1.60%	0.70%
Weighted average estimated fair value of options granted, per share (in dollars per share) \| $ / shares	$ 6.79	$ 5.95	$ 6.08
Stock Options [Member] \| Stock Options Granted Prior To Fiscal 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Stock Options [Member] \| Stock Options Granted From Fiscal 2005 Through Fiscal 2010 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Stock Options [Member] \| Stock Options Granted In 2011 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Stock Options [Member] \| Stock Options Granted Since 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Number of common stock shares each restricted stock unit represents (in shares)	1
Stock-based compensation service period	3 years	3 years
Restricted Stock Units (RSUs) [Member] \| Long-Term Incentive Plan (LTIP) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (in years)	2 years 8 months 12 days	2 years 10 months 24 days
Expected volatility (as a percent)	32.10%	32.50%
Risk-free interest rate (as a percent)	0.90%	0.70%
Accelerated Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation \| $			$ 1,400