CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 28, 2025	Jun. 29, 2024
Cash flows from operating activities:
Net income (loss)	$ (119.4)	$ 34.9
Loss from discontinued operations, net of tax	(211.5)	(22.0)
Net income from continuing operations	92.1	56.9
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	17.0	20.4
Stock-based compensation expense	17.6	20.6
Loss on disposal of equipment, intangibles and other assets	4.0	0.0
Provision for credit losses	1.7	0.7
Provision for deferred income taxes	5.9	0.0
Amortization of debt issuance cost	0.9	0.9
Changes in operating assets and liabilities:
(Increase) decrease in trade accounts receivable	(10.3)	(8.2)
(Increase) decrease in related party receivable	(3.1)	(4.6)
(Increase) decrease in inventories	(31.7)	(4.7)
(Increase) decrease in other current assets	(8.8)	11.7
(Increase) decrease in lease receivable, net	5.5	4.9
(Increase) decrease in deferred costs and other contract assets	1.9	(1.6)
(Increase) decrease in other non-current assets	5.1	0.5
Increase (decrease) in accounts payable	2.7	(16.6)
Increase (decrease) in accrued compensation	(12.0)	12.8
Increase (decrease) in accrued liabilities	8.0	15.3
Increase (decrease) in income tax payable	0.0	(4.9)
Increase (decrease) in deferred revenue and other contract-related liabilities	1.9	3.7
Increase (decrease) in other non-current liabilities	1.1	(1.8)
Net cash provided by (used in) operating activities from continuing operations	99.5	106.0
Net cash provided by (used in) operating activities from discontinued operations	1.0	14.3
Net cash provided by (used in) operating activities	100.5	120.3
Cash flows from investing activities:
Purchases of property and equipment	(6.4)	(9.7)
Proceeds from sale of property and equipment	19.6	9.8
Increase in intangible assets	(2.6)	(8.1)
Other strategic investing activities	0.0	(0.1)
Net cash provided by (used in) investing activities from continuing operations	10.6	(8.1)
Net cash provided by (used in) investing activities from discontinued operations	(9.1)	(13.1)
Net cash provided by (used in) investing activities	1.5	(21.2)
Cash flows from financing activities:
Borrowings under line of credit	0.0	64.0
Repayments on line of credit	(116.5)	(184.8)
Proceeds from issuance of common stock	56.2	9.9
Payroll tax withholdings on behalf of employees for vested equity awards	(12.0)	(5.8)
Repurchases of common stock	(13.7)	0.0
Net cash provided by (used in) financing activities from continuing operations	(86.0)	(116.7)
Net cash provided by (used in) financing activities from discontinued operations	(1.7)	(0.8)
Net cash provided by (used in) financing activities	(87.7)	(117.5)
Effect of foreign currency exchange rates on cash	1.4	(14.2)
Net increase in cash, cash equivalents and restricted cash	15.7	(32.6)
Cash, cash equivalents and restricted cash at beginning of period	181.4	168.2
Cash, cash equivalents and restricted cash at end of period	$ 197.1	$ 135.6