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Income Taxes
 3 Months Ended
Jul. 31, 2023
Income Tax Disclosure [Abstract]  
Income Taxes . Income Taxes
Income tax expense of $897,000 and $379,000 was recorded for the three months ended July 31, 2023 and July 31, 2022, respectively. The effective tax rate was 26.3% and (111.5)% for the three months ended July 31, 2023 and July 31, 2022, respectively. The effective tax rate for the three months ended July 31, 2023 reflects the impact of foreign operations which are taxed at different rates than the U.S. tax rate of 21%, combined with expected current year tax expense for the Company's domestic operations in excess of the change in domestic valuation allowance required for the fiscal year. The effective tax rate for the three months ended July 31, 2022 reflected the impact of foreign operations and the recording of a valuation allowance against the deferred tax asset which resulted in the elimination of any U.S. income tax benefit for pretax losses incurred during the period.
In August 2019, the Company revoked its indefinite reinvestment of foreign unremitted earnings position in compliance with ASC 740 "Income Taxes" and terminated its indefinite reinvestment of unremitted earnings assertion for the Singapore and
Kewaunee Labway India Pvt. Ltd. international subsidiaries. The Company has a deferred tax liability of $1,363,000 and $1,318,000 for the withholding tax related to Kewaunee Labway India Pvt. Ltd. as of July 31, 2023 and April 30, 2023, respectively.