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Goodwill, Service Contracts and Other Assets (Details 3) (USD $) In Thousands, unless otherwise specified | May 31, 2012 | May 31, 2011 | May 31, 2010
--- | --- | --- | ---
Information regarding service contracts and other assets |  |  |  |  |
Service contracts, Net | $ 76,822 |  | $ 102,312 |  | $ 103,445
Other Assets, Carrying Amount | 186,062 |  | 183,423 |  |
Other Assets, Accumulated Amortization | 73,226 |  | 68,672 |  |
Other Assets, Net | 112,836 |  | 114,751 |  |
Noncompete agreements [Member] |  |  |  |  |
Information regarding service contracts and other assets |  |  |  |  |
Other Assets, Carrying Amount | 76,036 |  | 76,091 |  |
Other Assets, Accumulated Amortization | 69,954 |  | 63,982 |  |
Other Assets, Net | 6,082 |  | 12,109 |  |
Investments [Member] |  |  |  |  |
Information regarding service contracts and other assets |  |  |  |  |
Other Assets, Carrying Amount | 90,198 | [1] | 84,197 | [1] |
Other Assets, Accumulated Amortization | 0 | [1] | 0 | [1] |
Other Assets, Net | 90,198 | [1] | 84,197 | [1] |
Other [Member] |  |  |  |  |
Information regarding service contracts and other assets |  |  |  |  |
Other Assets, Carrying Amount | 19,828 |  | 23,135 |  |
Other Assets, Accumulated Amortization | 3,272 |  | 4,690 |  |
Other Assets, Net | 16,556 |  | 18,445 |  |
Service Contracts [Member] |  |  |  |  |
Information regarding service contracts and other assets |  |  |  |  |
Service contracts, Carrying Amount | 384,622 |  | 379,967 |  |
Service contracts, Accumulated Amortization | 307,800 |  | 277,655 |  |
Service contracts, Net | $ 76,822 |  | $ 102,312 |  |
[1] | Investments at May 31, 2012, include the cash surrender value of insurance policies of $57.4 million, equity method investments of $31.9 million and cost method investments of $0.9 million. Investments at May 31, 2011, include the cash surrender value of insurance policies of $51.1 million, equity method investments of $30.2 million and cost method investments of $2.9 million.

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