Unrecognized Tax Benefits	9 Months Ended
Unrecognized Tax Benefits	Jan. 31, 2021
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits	Unrecognized Tax Benefits The total amount of gross unrecognized tax benefits was $8,907 at April 30, 2020. At January 31, 2021, gross unrecognized tax benefits were $10,825. If this unrecognized tax benefit were ultimately recognized, $8,552 is the amount that would impact our effective tax rate. The total amount of accrued interest and penalties for such unrecognized tax benefits was $530 at January 31, 2021, and $354 at April 30, 2020. Net interest and penalties included in income tax expense for the nine months ended January 31, 2021 was a net expense of $176 and a net expense of $183 for the same period in 2020. A number of years may elapse before an uncertain tax position is audited and ultimately settled. It is difficult to predict the ultimate outcome or the timing of resolution for uncertain tax positions. It is reasonably possible that the amount of unrecognized tax benefits could significantly increase or decrease within the next twelve months. These changes could result from the expiration of the statute of limitations, examinations or other unforeseen circumstances. The Company has no ongoing federal or state income tax examinations. At this time, the Company’s best estimate of the reasonably possible change in the amount of the gross unrecognized tax benefits is a decrease of $1,800 during the next twelve months mainly due to the expiration of certain statute of limitations. The federal statute of limitations remains open for the tax years 2015 and forward. Tax years 2012 and forward are subject to audit by state tax authorities depending on open statute of limitations waivers and the tax code of each state.

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.