v3.5.0.1

Income Taxes - Components of Net Deferred Tax Amounts Recognized in Accompanying Consolidated Balance Sheet (Details) - USD ($) $ in Thousands | Apr. 30, 2016 | Apr. 30, 2015
--- | --- | ---
Deferred tax asset: |  |
Bad debts | $ 872 | $ 1,493
Other accruals | 1,138 | 1,317
Charitable contributions | 509 | 352
Stock options | 5,832 | 5,412
State tax credit | 2,347 | 496
Net operating losses | 64,998 | 58,822
Research and development credit | 6,290 | 6,485
Deferred rent | 2,513 | 273
Deferred revenue | 1,969 | 1,816
FTC | 128 | 0
Total deferred tax asset | 86,596 | 76,466
Less valuation allowance | (73,806) | (66,448)
Net deferred tax assets | 12,790 | 10,018
Deferred tax liability: |  |
Amortization of intangible assets | (3,564) | (4,300)
Depreciation | (7,476) | (4,374)
Total deferred tax liability | (11,040) | (8,674)
Total net deferred tax assets | $ 1,750 | $ 1,344

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