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Acquisitions - Allocation of Purchase Price (Details) - USD ($) $ in Thousands | Apr. 30, 2016 | Apr. 30, 2015
--- | --- | ---
Liabilities assumed: |  |
Goodwill | $ 128,566 | $ 127,046
Series of Individually Immaterial Business Acquisitions |  |
Assets acquired: |  |
Inventories | 267 |
Property and equipment | 5,465 |
Other assets | 25 |
Total assets | 5,757 |
Liabilities assumed: |  |
Accrued expenses | 14 |
Total liabilities | 14 |
Net tangible assets acquired | 5,743 |
Goodwill | 1,520 |
Total consideration paid | $ 7,263 |

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