Income Taxes	3 Months Ended
Income Taxes	Jul. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes General. The Company’s effective income tax rate on continuing operations was 24.6% and 26.1% for the three months ended July 31, 2021 and 2020, respectively. The difference in the effective income tax rate over the U.S. federal statutory rate of 21.0% for the three months ended July 31, 2021 was primarily due to the impact of state and foreign taxes. The difference in the effective income tax rate over the U.S. federal statutory rate for the three months ended July 31, 2020 was primarily due to the impact of state taxes, foreign tax rates and a change in the valuation allowance. Valuation allowance. The Company had a valuation allowance of $11.9 million and $11.8 million against its deferred tax assets related to certain U.S. tax jurisdictions as of July 31, 2021 and April 30, 2021, respectively. To the extent the Company generates sufficient taxable income in the future to utilize the tax benefits of the net deferred tax assets on which a valuation allowance is recorded, the effective tax rate may decrease as the valuation allowance is reversed. Uncertain tax positions. The Company had no reserve for uncertain tax positions as of July 31, 2021 or April 30, 2021.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.