Employee Benefit and Stock Plans (Tables)

12 Months Ended

Nov. 30, 2017

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

Stock Based Compensation Expense

The following table presents our stock-based compensation expense (in thousands):

	Years Ended November 30,
	2017		2016		2015
Stock options	$	2,592	$	7,076	$	7,576
Restricted stock	4,177		2,630		2,499
PSUs	6,439		5,343		5,404
Director awards	1,425		1,801		1,664
Total	$	14,633	$	16,850	$	17,143

Stock option transactions

Stock option transactions are summarized as follows:

	Years Ended November 30,
	2017				2016				2015
	Options		Weighted Average Exercise Price		Options		Weighted Average Exercise Price		Options		Weighted Average Exercise Price
Options outstanding at beginning of year	12,731,545		$	18.95	12,635,644		$	19.39	11,735,042		$	20.45
Granted	—		—		1,012,686		16.21		1,262,000		14.92
Exercised	(1,650,360	)	16.01		(551,898	)	13.95		(76,164	)	9.69
Cancelled	(1,815,945	)	28.31		(364,887	)	34.07		(285,234	)	45.80
Options outstanding at end of year	9,265,240		$	17.64	12,731,545		$	18.95	12,635,644		$	19.39
Options exercisable at end of year	8,307,632		$	17.86	10,506,810		$	19.70	10,389,722		$	20.35
Options available for grant at end of year	7,495,792				7,034,523				1,554,195

Stock options outstanding and stock options exercisable

Stock options outstanding and stock options exercisable at November 30, 2017 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	1,361,500	$	6.36	3.9	1,361,500	$	6.36
$11.06 to $14.62	2,165,435	12.96		5.0	2,165,435	12.96
$14.63 to $16.20	2,064,255	15.15		5.0	1,709,586	15.19
$16.21 to $28.10	2,106,093	17.62		5.3	1,503,154	18.18
$28.11 to $45.68	1,567,957	37.23		1.4	1,567,957	37.23
$  6.32 to $45.68	9,265,240	$	17.64	4.3	8,307,632	$	17.86	3.8

Assumptions of Black-Scholes option-pricing model

he 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,
	2017	2016		2015
Risk-free interest rate	—	1.3	%	1.4	%
Expected volatility factor	—	41.3	%	43.6	%
Expected dividend yield	—	.6	%	.7	%
Expected term	—	5 years		5 years

Restricted stock transactions

Restricted stock transactions are summarized as follows:

	Years Ended November 30,
	2017				2016				2015
	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	604,619		$	16.24	416,977		$	15.88	355,294		$	15.81
Granted	321,835		24.49		453,703		15.73		285,006		15.19
Vested	(364,670	)	16.09		(252,854	)	14.78		(204,663	)	14.83
Cancelled	(57,858	)	15.61		(13,207	)	15.12		(18,660	)	15.45
Outstanding at end of year	503,926		$	21.69	604,619		$	16.24	416,977		$	15.88

Schedule of Share Based Payments Performance Shares Activity

PSU transactions are summarized as follows:

	Years Ended November 30,
	2017				2016				2015
	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	809,860		$	17.19	820,209		$	15.52	628,209	$	15.70
Granted	424,797		22.99		369,281		13.81		192,000	14.92
Vested	(278,460	)	16.67		(374,630	)	10.21		—	—
Cancelled	(30,965	)	14.92		(5,000	)	16.21		—	—
Outstanding at end of year	925,232		$	20.09	809,860		$	17.19	820,209	$	15.52