Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Treasury Stock
Balance at Apr. 30, 2019	$ 444,444	$ 73	$ 263,180	$ 402,946	$ 620	$ (222,375)
Balance (in shares) at Apr. 30, 2019		72,864,000
Treasury stock, shares at Apr. 30, 2019						18,167,000
Proceeds from exercise of employee stock options	$ 254		254
Proceeds from exercise of employee stock options (in shares)	67,094	67,000
Stock-based compensation - continuing operations	$ 2,357		2,357
Stock-based compensation - discontinued operations	564		564
Shares issued under employee stock purchase plan	1,873		1,873
Shares issued under employee stock purchase plan (in shares)		380,000
Change in unrealized loss on interest rate swap, net of tax effect	(547)				(547)
Issuance of common stock under restricted stock unit awards, net of shares surrendered	(597)	$ (1)	598
Issuance of common stock under restricted stock unit awards, net of shares surrendered (in shares)		(216,000)
Net income/(loss)	(61,230)			(61,230)
Balance at Apr. 30, 2020	387,118	$ 74	267,630	341,716	73	$ (222,375)
Balance (in shares) at Apr. 30, 2020		73,527,000
Treasury stock, shares at Apr. 30, 2020						18,167,000
Proceeds from exercise of employee stock options	$ 1,540		1,540
Proceeds from exercise of employee stock options (in shares)	200,667	201,000
Stock-based compensation - continuing operations	$ 4,706		4,706
Stock-based compensation - discontinued operations	184		184
Shares issued under employee stock purchase plan	1,614		1,614
Shares issued under employee stock purchase plan (in shares)		205,000
Issuance of common stock under restricted stock unit awards, net of shares surrendered	(2,243)		2,243
Issuance of common stock under restricted stock unit awards, net of shares surrendered (in shares)		(289,000)
Repurchase of treasury stock	(110,000)					$ 110,000
Repurchase of treasury stock, shares						(6,118,000)
Dividends issued	(8,223)			8,223
Spin off of outdoor products and accessories business	(260,361)			(260,361)
Net income/(loss)	252,049			252,049
Balance at Apr. 30, 2021	$ 266,384	$ 74	273,431	325,181	73	$ (332,375)
Balance (in shares) at Apr. 30, 2021	49,937,329	74,222,000
Treasury stock, shares at Apr. 30, 2021	24,284,798					24,285,000
Stock-based compensation - continuing operations	$ 4,536		4,536
Shares issued under employee stock purchase plan	$ 1,719		1,719
Shares issued under employee stock purchase plan (in shares)	0
Issuance of common stock under restricted stock unit awards, net of shares surrendered	$ (1,584)	$ (1)	1,585
Issuance of common stock under restricted stock unit awards, net of shares surrendered (in shares)		(419,000)
Repurchase of treasury stock	(90,000)					$ 90,000
Repurchase of treasury stock, shares						(4,755,000)
Dividends issued	(15,035)			15,035
Net income/(loss)	194,494			194,494
Balance at Apr. 30, 2022	$ 360,514	$ 75	$ 278,101	$ 504,640	$ 73	$ (422,375)
Balance (in shares) at Apr. 30, 2022	45,601,069	74,641,000
Treasury stock, shares at Apr. 30, 2022	29,040,370					29,040,000