Background, Description of Business, and Basis of Presentation - Schedule of Geographic Makeup of Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Disaggregation of Revenue [Line Items]
Total net sales	$ 70,105	$ 82,649	$ 201,633	$ 212,214
Change in Total net sales	$ (12,544)		$ (10,581)
% Change in Total net sales	(15.20%)		(5.00%)
Domestic Net Sales
Disaggregation of Revenue [Line Items]
Total net sales	$ 67,610	80,128	$ 191,599	205,124
Change in Total net sales	$ (12,518)		$ (13,525)
% Change in Total net sales	(15.60%)		(6.60%)
International Net Sales
Disaggregation of Revenue [Line Items]
Total net sales	$ 2,495	$ 2,521	$ 10,034	$ 7,090
Change in Total net sales	$ (26)		$ 2,944
% Change in Total net sales	(1.00%)		41.50%