Incentive Plans and Stock-Based Compensation (Tables)

12 Months Ended

Dec. 01, 2012

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

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

The following table summarizes compensation expense related to directors’ restricted stock and the number of shares issued under the plans during the years ended November 30, 2012, 2011 and 2010.

	2012		2011		2010
Pre-tax compensation expense	$	200	$	200	$	240
Shares of Company common stock issued under the plans	4,055		4,540		6,760

The following table summarizes information related to stock options and stock option exercises during the years ended November 30, 2012, 2011 and 2010.

	2012			2011			2010
Pre-tax compensation expense	$	4,997		$	4,397		$	3,632
Deferred tax benefits	(1,836		)	(1,616		)	(1,335		)
Excess tax benefits associated with tax deductions over the amount of compensation expense recognized in the consolidated financial statements	2,007			5,100			2,457
Fair value of options granted	6,407			5,803			4,213
Total intrinsic value of options exercised	8,793			16,732			7,547
Cash received upon exercise of options	5,170			7,233			5,703
Addition to capital in excess of par value due to exercise of stock options	5,440			8,045			7,313

The following table summarizes information related to restricted stock unit awards during the years ended November 30, 2012, 2011 and 2010.

	2012			2011			2010
Pre-tax compensation expense	$	1,229		$	1,079		$	970
Deferred tax benefits	(451		)	(396		)	(357		)
Excess tax (expense) benefit associated with tax deductions (under) over the amount of compensation expense recognized in the consolidated financial statements	(88		)	3			(111		)
Fair value of restricted stock unit awards on date of grant	1,489			1,263			1,102
Fair value of restricted stock unit awards vested	2,359			905			983

Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity [Table Text Block]

The following table summarizes activity with respect to nonqualified stock options granted by the Company and includes options granted under the 2009, 2004 and 1994 Incentive Plans.

	2012			2011			2010
	Options Granted under Incentive Plans	Weighted Average Exercise Price		Options Granted under Incentive Plans	Weighted Average Exercise Price		Options Granted under Incentive Plans	Weighted Average Exercise Price
Outstanding at beginning of year	2,907,533	$	32.39	3,229,410	$	29.07	3,229,187	$	27.43
Granted	512,850	$	49.84	494,750	$	43.00	482,510	$	32.69
Exercised	(353,793)	$	25.28	(774,661)	$	25.12	(443,810)	$	20.76
Surrendered	(29,439)	$	40.17	(41,966)	$	36.06	(38,477)	$	33.02
Outstanding at end of year	3,037,151	$	36.09	2,907,533	$	32.39	3,229,410	$	29.07
Exercisable at end of year	2,035,267	$	32.54	1,971,197	$	30.00	2,347,852	$	27.48

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

The following table summarizes information about the Company’s outstanding and exercisable options at November 30, 2012.

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number	Weighted Average Exercise Price		Intrinsic Value		Weighted Average Remaining Life in Years	Number	Weighted Average Exercise Price		Intrinsic Value		Weighted Average Remaining Life in Years
$16.15 - $22.80	136,825	$	21.60	$	3,390	1.00	136,825	$	21.60	$	3,390	1.00
$25.31 - $38.06	1,931,340	$	31.86	28,042		4.72	1,674,783	$	31.77	24,473		4.41
$40.73 - $44.07	463,686	$	43.01	1,564		8.08	160,409	$	43.30	493		8.15
$49.35 - $49.91	505,300	$	49.84	—		9.33	63,250	$	49.38	—		9.57
	3,037,151	$	36.09	$	32,996	5.83	2,035,267	$	32.54	$	28,356	4.63

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The fair value of each option grant is estimated on the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions by grant year.

	2012			2011			2010
Weighted average fair value per option at the date of grant for options granted	$	12.49		$	11.73		$	8.73
Risk-free interest rate	1.38		%	2.52		%	2.84		%
Expected dividend yield	0.96		%	0.98		%	1.02		%
Expected volatility factor	26.52		%	25.54		%	26.00		%
Expected option term in years	6.10			6.40			6.20

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

The following table summarizes the restricted stock unit awards.

	2012			2011			2010
	Units	Weighted Average Grant Date Fair Value		Units	Weighted Average Grant Date Fair Value		Units	Weighted Average Grant Date Fair Value
Nonvested at beginning of year	71,545	$	36.95	70,894	$	33.23	67,476	$	34.01
Granted	29,839	$	49.91	29,467	$	42.86	34,128	$	32.30
Vested	(60,320)	$	39.11	(26,937)	$	33.61	(28,898)	$	34.01
Surrendered	(1,119)	$	44.15	(1,879)	$	37.18	(1,812)	32.30
Nonvested at end of year	39,945	$	43.16	71,545	$	36.95	70,894	$	33.23

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]

The Company issued stock under this plan with fair value upon issuance as follows during the years ended November 30, 2012, 2011 and 2010.

	2012		2011		2010
Company stock issued under the plan	$	1,244	$	1,216	$	1,096