Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 30, 2021	Jan. 25, 2020	Jan. 30, 2021	Jan. 25, 2020
Sales:
Product sales and other	$ 373,502	$ 453,678	$ 1,118,544	$ 1,474,448
Rental income	38,111	48,614	92,568	119,729
Total sales	411,613	502,292	1,211,112	1,594,177
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	315,607	354,999	933,847	1,146,400
Rental cost of sales	25,394	28,758	60,506	70,635
Cost of Goods and Services Sold	341,001	383,757	994,353	1,217,035
Gross profit	70,612	118,535	216,759	377,142
Selling and administrative expenses	92,708	106,184	254,723	317,279
Depreciation and amortization expense	13,307	15,117	40,563	46,542
Other Nonrecurring Expense	27,630	0	27,630	433
Restructuring and other charges	1,669	205	10,727	3,240
Operating (loss) income	(64,702)	(2,971)	(116,884)	9,648
Interest expense, net	2,311	1,904	5,876	5,882
Income (loss) before taxes	(67,013)	(4,875)	(122,760)	3,766
Income tax expense (benefit)	(18,724)	(3,182)	(35,334)	1,683
Net (loss) income	$ (48,289)	$ (1,693)	$ (87,426)	$ 2,083
(Loss) Earnings per share of common stock
Diluted	$ (0.96)	$ (0.04)	$ (1.78)	$ 0.04
Weighted Average Number of Shares Outstanding, Basic and Diluted			49,099	47,911
Basic	$ (0.96)	$ (0.04)	$ (1.78)	$ 0.04
Weighted average common shares outstanding
Basic	50,082	48,298	49,099	47,911
Diluted	50,082	48,298	49,099	48,767