Note 13 - Employee Stock Option and Retirement Plans (Tables)

9 Months Ended

May 31, 2014

Note 13 - Employee Stock Option and Retirement Plans (Tables) [Line Items]

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

	Number Outstanding			Weighted Average Exercise Price Per Share
Balance at August 31, 2013		4,729		$	75.95
Granted – non-performance-based		36			108.64
Granted – performance-based		36			110.31
Exercised		(136	)		59.38
Forfeited		(10	)		79.22
Balance at November 30, 2013		4,655		$	76.94
Granted – non-performance-based		139			102.01
Granted – performance-based		166			109.39
Granted – non-employee Directors grant		14			107.65
Exercised		(136	)		40.99
Forfeited		(24	)		86.75
Balance at February 28, 2014		4,814		$	79.85
Exercised		(142	)		59.17
Forfeited		(16	)		94.48
Balance at May 31, 2014		4,656		$	80.42

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

	Number Outstanding			Weighted Average Grant Date Fair Value Per Award
Balance at August 31, 2013		358		$	80.43
Granted (restricted stock and stock units)		162		$	102.27
Vested		(63	)	$	83.49
Canceled/forfeited		(2	)	$	69.27
Balance at November 30, 2013		455		$	87.69
Granted (restricted stock and stock units)		42		$	100.70
Vested		(17	)	$	60.28
Canceled/forfeited		(4	)	$	97.28
Balance at February 28, 2014		476		$	89.79
Vested*		(55	)	$	93.12
Canceled/forfeited		(3	)	$	89.77
Balance at May 31, 2014		418		$	89.34

Schedule of Share Based Awards Available For Grant [Table Text Block]

	Share-based Awards Available for Grant under the Employee Option Plan			Share-based Awards Available for Grant under the Non-Employee Directors Plan
Balance at August 31, 2013		3,116			107
Granted – non performance-based options		(36	)		0
Granted – performance-based options		(36	)		0
Restricted stock awards granted*		(404	)		0
Share-based awards canceled/forfeited*		16			0
Balance at November 30, 2013		2,656			107
Granted – non performance-based options		(139	)		(14	)
Granted – performance-based options		(166	)		0
Restricted stock awards granted*		(106	)		0
Share-based awards canceled/forfeited*		35			9
Balance at February 28, 2014		2,280			102
Share-based awards canceled/forfeited*		21			0
Balance at May 31, 2014		2,301			102

Performance Shares [Member]

Note 13 - Employee Stock Option and Retirement Plans (Tables) [Line Items]

Schedule of Share Based Compensation Vesting Percentage and Related Expenses [Table Text Block]

Vesting Percentage	Total Unamortized Stock-based Compensation Expense at May 31, 2014		Cumulative Catch-up Adjustment*			Average Remaining Quarterly Expense to be Recognized
0%	$	0	$	(2,265	)	$	0
20%	$	2,483	$	0		$	182
60%	$	7,449	$	4,530		$	545
100%	$	12,415	$	9,060		$	908

July 2012 Performance Based [Member]

Note 13 - Employee Stock Option and Retirement Plans (Tables) [Line Items]

Schedule of Share Based Compensation Vesting Percentage and Related Expenses [Table Text Block]

Vesting Percentage	Cumulative Catch-up Adjustment*			Remaining Expense to be Recognized
Third 20%	$	(594	)	$	1,006
Fourth 20%	$	736		$	2,055
Fifth 20%	$	1,704		$	2,687