Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 27, 2024	Dec. 29, 2023	Dec. 30, 2022
Cash flows from operating activities:
Net income (loss)	$ 34.5	$ (22.2)	$ 50.4
Adjustments to reconcile net income (loss) to net cash provided by operating activities (excluding assets acquired, liabilities assumed and noncontrolling interests at acquisition):
Depreciation and amortization	45.7	37.6	38.4
Amortization of intangible assets	30.4	24.1	30.0
Stock-based compensation	17.4	12.1	19.1
Amortization of debt issuance costs	3.0	3.9	3.9
Loss (gain) on sale of property, plant and equipment	1.2	(0.9)	(0.2)
Change in the fair value of financial instruments	(29.2)	1.7	1.0
Deferred income taxes	(3.0)	(12.4)	(0.2)
Net loss on divestiture	0.0	0.0	77.4
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable	(60.3)	78.5	(15.7)
Inventories	(6.5)	80.8	(84.4)
Prepaid expenses and other current assets	(3.2)	12.5	(4.5)
Other non-current assets	1.3	0.0	(3.4)
Accounts payable	26.4	(61.5)	(68.4)
Accrued compensation and related benefits	2.4	(5.6)	7.1
Income taxes payable	1.0	(5.2)	(0.1)
Operating lease assets and liabilities	2.6	0.4	(2.2)
Other liabilities	1.3	(7.9)	(1.0)
Net cash provided by operating activities	65.0	135.9	47.2
Cash flows from investing activities:
Purchases of property, plant and equipment	(63.5)	(75.8)	(100.1)
Acquisition of businesses, net of cash acquired	0.0	(46.1)	0.0
Proceeds from sale of equipment	0.0	2.2	0.5
Divestiture of subsidiaries	0.0	0.0	3.4
Net cash used in investing activities	(63.5)	(119.7)	(96.2)
Cash flows from financing activities:
Proceeds from bank borrowings	67.7	0.0	0.0
Proceeds from issuance of common stock	2.0	0.8	0.7
Extinguishment of bank borrowings	(44.2)	0.0	0.0
Principal payments on bank borrowings	(10.2)	(38.6)	(39.7)
Payment of debt issuance costs	(2.5)	(0.3)	(0.7)
Employees’ taxes paid upon vesting of restricted stock units	(2.5)	(2.2)	(3.9)
Payments of dividends to a joint venture shareholder	(0.5)	(0.2)	(0.3)
Repurchase of shares	0.0	(29.4)	(12.1)
Net cash provided by (used in) financing activities	9.8	(69.9)	(56.0)
Effect of exchange rate changes on cash and cash equivalents	(4.4)	1.9	(2.7)
Net increase (decrease) in cash and cash equivalents	6.9	(51.8)	(107.7)
Cash and cash equivalents at beginning of period	307.0	358.8	466.5
Cash and cash equivalents at end of period	313.9	307.0	358.8
Supplemental cash flow information:
Income taxes paid, net of income tax refunds	34.3	31.2	36.8
Interest paid	40.4	44.8	31.9
Non-cash investing and financing activities:
Property, plant and equipment purchased included in accounts payable and other liabilities	2.9	9.7	16.8
Fair value of HIS earn-out at acquisition date	$ 0.0	$ 27.1	$ 0.0