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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 910	$ 2,093	$ 5,873	$ 3,484
Other comprehensive income, net of tax:
Decrease in pension liability	98	132	293	396
Income tax effect	(31)	(42)	(93)	(126)
Decrease in pension liability, net of tax	67	90	200	270
Other comprehensive income	67	90	200	270
Total comprehensive income	$ 977	$ 2,183	$ 6,073	$ 3,754

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