Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Oct. 29, 2022	Oct. 30, 2021
Operating activities
Net loss	$ (15,018)	$ (11,362)
Adjustments to reconcile net loss from operations to cash provided by (used in) operating activities:
Depreciation and amortization	32,275	30,019
Loss (income) from equity method investments	1,773	(520)
Loss on deconsolidation of previously controlled subsidiary	189
Amortization of debt issuance costs	422	258
Provision for doubtful accounts	19	(35)
Other non-cash expense, net	565	157
Non-cash lease expense	3,775	3,358
(Gain) loss on foreign currency transactions	(59)	30
Unrealized gain on available-for-sale equity securities, net	(928)
Deferred income taxes	(808)	(840)
Stock-based compensation	4,402	2,342
Loss on disposal of property and equipment	825	3,036
Amortization of debt securities	125	113
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	28,012	37,134
Unbilled receivables and retentions	11,696	(46,619)
Inventories	(23,836)	(10,075)
Income taxes receivable	(8,539)	(10,667)
Prepaid expenses and other assets	(1,117)	272
Accounts payable	6,823	(3,587)
Other liabilities	(8,664)	3,642
Net cash provided by (used in) operating activities	31,932	(3,344)
Investing activities
Acquisition of property and equipment	(7,587)	(13,147)
Equity method investments	(2,774)	(6,245)
Equity security investments	(5,100)
Business acquisitions, net of cash acquired	(5,105)	(46,150)
Proceeds from deconsolidation of previously controlled subsidiary, net of cash deconsolidated	(635)
Redemptions of available-for-sale investments	25,945	30,531
Purchases of available-for-sale investments	(1,326)
Net cash provided by (used in) investing activities	3,418	(34,787)
Financing activities
Principal payments of term loan	(22,500)	(5,000)
Holdback and retention payments for business acquisition		(5,991)
Proceeds from shares issued, net of issuance costs	11,778
Tax withholding payment related to net settlement of equity awards	(853)	(1,176)
Exercise of stock options	682	119
Other	(14)	(16)
Net cash used in financing activities	(10,907)	(12,064)
Effects of currency translation on cash and cash equivalents	(257)	(275)
Net increase (decrease) in cash, cash equivalents, and restricted cash	24,186	(50,470)
Cash, cash equivalents and restricted cash at beginning of period	77,231	157,063
Cash, cash equivalents and restricted cash at end of period	101,417	106,593
Cash paid, net during the period for:
Income taxes	718	1,923
Interest	3,398	2,283
Non-cash activities
Unrealized (gain) loss on available-for-sale investments, net of deferred tax expense of $0 for the six months ended October 29, 2022 and October 30, 2021, respectively	(26)	3
Change in foreign currency translation adjustments	(1,992)	(2,017)
Issuances of inventory to property and equipment, ISR in-service assets	4,085	12,472
Acquisitions of property and equipment included in accounts payable	$ 810	$ 415