Employee Benefit and Stock Plans (Details 3) (USD $)	12 Months Ended
Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011	Nov. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	118,208	7,494	0
Restricted Stock
Restricted stock transactions
Outstanding at beginning of year, Shares	229,724	338,912	402,477
Weighted average per share grant date fair value in dollars per share	$ 16.23	$ 15.81	$ 15.03	$ 15.09
Granted, Shares	88,000	207,617	0
Granted, Weighted Average per Share Grant Date Fair Value	$ 17.50	$ 16.23	$ 0.00
Vested, Shares	(91,312)	(176,135)	(10,930)
Vested, Weighted Average per Share Grant Date Fair Value	$ 15.18	$ 14.25	$ 13.49
Cancelled, Shares	(6,784)	(140,670)	(52,635)
Cancelled, Weighted Average per Share Grant Date Fair Value	$ 17.24	$ 15.44	$ 15.44
Outstanding at end of year, Shares	219,628	229,724	338,912

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Number of share options (or share units) exercised during the current period.

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