CONSOLIDATED AND COMBINED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Former Net Parent Company Investment	Additional Paid-In Capital	Retained (Deficit)/Earnings	Treasury Stock
Balance at Apr. 30, 2019	$ 324,614		$ 324,614
Net loss	(96,201)		(96,201)
Net transfers from (to) former parent	(4,315)		(4,315)
Balance at Apr. 30, 2020	224,098		224,098
Net loss	18,405		3,876		$ 14,529
Stock-based compensation	2,486			$ 2,486
Shares issued under employee stock purchase plan	386			386
Shares issued under employee stock purchase plan, shares		35,000
Issuance of common stock under restricted stock unit awards, net of tax	(33)			(33)
Issuance of common stock under restricted stock unit awards, net of tax, shares		49,000
Net transfers from (to) former parent	34,563		34,563
Issuance of common stock and reclassification of former net parent company investment		$ 14	$ (262,537)	262,523
Issuance of common stock and reclassification of former net parent company investment, shares		13,975,000
Balance at Apr. 30, 2021	$ 279,905	$ 14		265,362	14,529
Balance, shares at Apr. 30, 2021	14,059,440	14,059,000
Net loss	$ (64,880)				(64,880)
Stock-based compensation	2,812			2,812
Shares issued under employee stock purchase plan	870			870
Shares issued under employee stock purchase plan, shares		77,000
Proceeds from exercise of stock options	5			5
Proceeds from exercise of stock options, shares		3,000
Issuance of common stock under restricted stock unit awards, net of tax	(656)			(656)
Issuance of common stock under restricted stock unit awards, net of tax, shares		101,000
Repurchase of treasury stock	(15,025)					$ (15,025)
Repurchase of treasury stock, shares						837,000
Balance at Apr. 30, 2022	$ 203,031	$ 14		$ 268,393	$ (50,351)	$ (15,025)
Balance, shares at Apr. 30, 2022	13,403,326	14,240,000				837,000