|
Note 7 - Equity Method Investments and Variable Interest Entities (Detail) - Investments In And Advances To Unconsolidated Entities, Joint Ventures And Limited Partnerships
|
Nov. 30, 2012
USD ($)
|
Aug. 31, 2012
USD ($)
|
Nov. 30, 2012
Minimum [Member]
Other Entities[Member]
|
Nov. 30, 2012
Maximum [Member]
Other Entities[Member]
|
Nov. 30, 2012
Westinghouse [Member]
AFN
|
Aug. 31, 2012
Westinghouse [Member]
AFN
|
Nov. 30, 2012
Other Entities[Member]
USD ($)
|
Aug. 31, 2012
Other Entities[Member]
USD ($)
|
Nov. 30, 2012
Total [Member]
USD ($)
|
Aug. 31, 2012
Total [Member]
USD ($)
|
|---|---|---|---|---|---|---|---|---|---|---|
| Investment in Westinghouse | 20.00% | |||||||||
| Investment in Westinghouse (in Afghanis) | 996,211,000 | 968,296,000 | ||||||||
| Ownership percentage - Unconsolidated Entities | 5% | 50% | - | |||||||
| Investment in Unconsolidated Entities | $ 4,861,000 | $ 6,160,000 | $ 4,861 | $ 6,160 | $ 1,001,072 | $ 974,456 |