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Goodwill, Service Contracts and Other Assets (Details 2) (Service Contracts, USD $) In Thousands | 3 Months Ended
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Aug. 31, 2011
Service contracts |
Balance at the beginning of the period | $ 102,312
Service contracts acquired | 366
Service contracts amortization | (8,221)
Foreign currency translation | (26)
Balance at the end of the period | 94,431
Rental Uniforms and Ancillary Products |
Service contracts |
Balance at the beginning of the period | 44,628
Service contracts amortization | (4,268)
Foreign currency translation | (32)
Balance at the end of the period | 40,328
First Aid, Safety and Fire Protection |
Service contracts |
Balance at the beginning of the period | 35,878
Service contracts amortization | (1,846)
Balance at the end of the period | 34,032
Document Management |
Service contracts |
Balance at the beginning of the period | 21,806
Service contracts acquired | 366
Service contracts amortization | (2,107)
Foreign currency translation | 6
Balance at the end of the period | $ 20,071

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