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v3.20.1

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Apr. 30, 2020 | Apr. 30, 2019
--- | --- | ---
Deferred tax assets: |  |
Accrued liabilities and reserves | $ 15,953 | $ 11,705
Property and equipment depreciation | 27,512 | 24,661
Workers compensation | 8,303 | 8,277
Deferred compensation | 3,781 | 3,827
Equity compensation | 7,083 | 6,727
State net operating losses & tax credits | 424 | 775
Other | 1,335 | 1,033
Total gross deferred tax assets | 64,391 | 57,005
Less valuation allowance | 47 | 47
Total net deferred tax assets | 64,344 | 56,958
Deferred tax liabilities: |  |
Property and equipment depreciation | (474,829) | (420,710)
Goodwill | (24,348) | (21,560)
Other | (765) | (476)
Total gross deferred tax liabilities | (499,942) | (442,746)
Net deferred tax liability | $ (435,598) | $ (385,788)

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