|
Note 11 - Share-Based Compensation (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
|
3 Months Ended |
|
Nov. 30, 2012
|
Nov. 30, 2011
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |
0 |
0 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |
127,768 |
30,040 |
| Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in Dollars per share) |
$ 23.35 |
$ 17.28 |
|
Restricted Stock Units (RSUs) [Member]
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
179,068 |
355,325 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) |
$ 43.50 |
$ 23.25 |
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
3 years |
|
|
Cash-Settled Restricted Stock Units [Member]
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
338,649 |
688,411 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) |
$ 43.49 |
$ 23.25 |
|
Stock Appreciation Rights (SARs) [Member]
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |
15,389 |
|
| Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in Dollars per share) |
$ 30.56 |
|
|
Performance Cash Units [Member]
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
5,377,146 |
11,661,500 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) |
$ 1.07 |
$ 1.10 |
| Allocated Share-based Compensation Expense (in Dollars) |
$ 5.2 |
|
|
First Performance Period [Member]
|
|
|
| Vesting Percentage |
25.00% |
|
|
Second Performance Period [Member]
|
|
|
| Vesting Percentage |
25.00% |
|
|
Third Performance Period [Member]
|
|
|
| Vesting Percentage |
50.00% |
|