Employee Benefit and Stock Plans (Tables)

12 Months Ended

Nov. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share Based Payments Performance Shares Activity

PSU transactions are summarized as follows:

	Years Ended November 30,
	2014			2013			2012
	Shares	Weighted Average per Share Grant Date Fair Value		Shares	Weighted Average per Share Grant Date Fair Value		Shares	Weighted Average per Share Grant Date Fair Value
Outstanding at beginning of year	385,049	$	16.39	227,049	$	16.23	—	$	—
Granted	243,160	14.62		158,000	16.63		227,049	16.23
Vested	—	—		—	—		—	—
Cancelled	—	—		—	—		—	—
Outstanding at end of year	628,209	$	15.70	385,049	$	16.39	227,049	$	16.23

Stock option transactions

Stock option transactions are summarized as follows:

	Years Ended November 30,
	2014				2013				2012
	Options		Weighted Average Exercise Price		Options		Weighted Average Exercise Price		Options		Weighted Average Exercise Price
Options outstanding at beginning of year	10,531,938		$	21.11	10,105,546		$	21.27	10,160,396		$	21.27
Granted	1,273,647		14.62		550,000		16.63		30,000		9.08
Exercised	(36,665	)	7.92		(118,208	)	13.46		(7,494	)	13.93
Cancelled	(33,878	)	20.25		(5,400	)	24.24		(77,356	)	17.96
Options outstanding at end of year	11,735,042		$	20.45	10,531,938		$	21.11	10,105,546		$	21.27
Options exercisable at end of year	10,103,739		$	21.32	9,414,935		$	22.26	8,533,224		$	23.76
Options available for grant at end of year	3,514,077				746,043				1,721,847

Stock options outstanding and stock options exercisable

Stock options outstanding and stock options exercisable at November 30, 2014 are summarized as follows:

	Options Outstanding				Options Exercisable
Range of Exercise Price	Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life
$  6.32 to $11.05	1,651,500	$	6.39	6.9	1,646,500	$	6.38
$11.06 to $14.95	3,150,622	13.03		6.7	1,876,975	11.95
$14.96 to $19.90	2,684,134	17.29		5.3	2,331,478	17.40
$19.91 to $33.92	2,120,746	27.01		3.1	2,120,746	27.01
$33.93 to $69.63	2,128,040	39.80		3.4	2,128,040	39.80
$  6.32 to $69.63	11,735,042	$	20.45	5.1	10,103,739	$	21.32	4.4

Assumptions of Black-Scholes option-pricing model

The fair value of each stock option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions:

	Years Ended November 30,
	2014		2013		2012
Risk-free interest rate	1.6	%	1.3	%	.7	%
Expected volatility factor	41.0	%	52.3	%	65.6	%
Expected dividend yield	.7	%	.6	%	1.9	%
Expected term	5 years		5 years		5 years

Restricted stock transactions

Restricted stock transactions are summarized as follows:

	Years Ended November 30,
	2014				2013				2012
	Shares		Weighted Average per Share Grant Date Fair Value		Shares		Weighted Average per Share Grant Date Fair Value		Shares		Weighted Average per Share Grant Date Fair Value
Outstanding at beginning of year	219,628		$	16.23	229,724		$	15.81	338,912		$	15.03
Granted	219,835		15.34		88,000		17.50		207,617		16.23
Vested	(73,908	)	16.52		(91,312	)	15.18		(176,135	)	14.25
Cancelled	(10,261	)	18.55		(6,784	)	17.24		(140,670	)	15.44
Outstanding at end of year	355,294		$	15.81	219,628		$	16.23	229,724		$	15.81