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Acquisitions - Allocation of Purchase Price (Details) - USD ($) $ in Thousands | Apr. 30, 2018 | Apr. 30, 2017
--- | --- | ---
Liabilities assumed: |  |
Goodwill | $ 140,258 | $ 132,806
Series of Individually Immaterial Business Acquisitions |  |
Assets acquired: |  |
Inventories | 1,618 |
Property and equipment | 28,090 |
Total assets | 29,708 |
Liabilities assumed: |  |
Accrued expenses | 0 |
Total liabilities | 0 |
Net tangible assets acquired | 29,708 |
Goodwill | 7,452 |
Total consideration paid | $ 37,160 |

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