Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 27, 2025	Jun. 28, 2024
Cash flows from operating activities:
Net income (loss)	$ (162,900,000)	$ 14,200,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	23,400,000	22,700,000
Amortization of intangible assets	14,300,000	15,300,000
Stock-based compensation	10,000,000.0	8,000,000.0
Amortization of debt issuance costs	1,100,000	1,900,000
Impairment of goodwill	151,100,000	0
Change in the fair value of financial instruments	(100,000)	(22,600,000)
Deferred income taxes	600,000	(500,000)
Loss on sale of property, plant and equipment	100,000	100,000
Changes in assets and liabilities:
Accounts receivable	34,300,000	(26,100,000)
Inventories	5,400,000	(25,400,000)
Prepaid expenses and other current assets	(7,800,000)	(1,500,000)
Other non-current assets	(500,000)	700,000
Accounts payable	(11,900,000)	41,400,000
Accrued compensation and related benefits	(2,600,000)	1,500,000
Income taxes payable	(4,200,000)	1,400,000
Operating lease assets and liabilities	11,100,000	500,000
Other liabilities	(4,000,000.0)	1,400,000
Net cash provided by operating activities	57,400,000	33,000,000.0
Cash flows from investing activities:
Purchases of property, plant and equipment	(29,200,000)	(31,000,000.0)
Proceeds from sale of equipment	100,000	100,000
Net cash used in investing activities	(29,100,000)	(30,900,000)
Cash flows from financing activities:
Proceeds from issuance of common stock	1,100,000	900,000
Principal payments on bank borrowings	(15,100,000)	(7,100,000)
Repurchase of shares	(3,400,000)	0
Employees’ taxes paid upon vesting of restricted stock units	(700,000)	(2,200,000)
Payments of dividends to a joint venture shareholder	(100,000)	(100,000)
Proceeds from bank borrowings	0	67,700,000
Extinguishment of bank borrowings	0	(44,200,000)
Payment of debt issuance costs	0	(2,500,000)
Other financing activities	(600,000)	0
Net cash provided by (used in) financing activities	(18,800,000)	12,500,000
Effect of exchange rate changes on cash and cash equivalents	4,000,000.0	(2,100,000)
Net increase in cash and cash equivalents	13,500,000	12,500,000
Cash and cash equivalents at beginning of period	313,900,000	307,000,000.0
Cash and cash equivalents at end of period	327,400,000	319,500,000
Supplemental cash flow information:
Income taxes paid, net of income tax refunds	18,400,000	17,700,000
Interest paid	18,900,000	22,300,000
Non-cash investing and financing activities:
Property, plant and equipment purchased included in accounts payable and other liabilities	$ 4,500,000	$ 4,300,000