Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 26, 2022	Mar. 27, 2021
Cash flows (used in) provided by operating activities:
Net (loss) income	$ (1,955)	$ 65,565
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	19,634	16,996
Impairment of assets	41	227
Loss (gain) on disposal of property, plant and equipment	21	(36)
Change in right-of-use assets	1,994	1,965
Other non-cash expense (income)	45	(48)
Stock-based compensation expense	2,922	4,957
Deferred income taxes	21	4,565
Changes in operating assets and liabilities:
Accounts receivable	(46,973)	(26,723)
Inventories	(11,205)	(30,581)
Prepaid expenses, income tax receivable, other current assets and other assets	(937)	(14,369)
Third-party production prepayments	7,721	(21,584)
Accounts payable	26,799	36,912
Accrued expenses, other current liabilities and other liabilities	(37,706)	(16,019)
Change in operating lease liabilities	(1,428)	(2,020)
Net cash (used in) provided by operating activities	(41,006)	19,807
Cash flows used in investing activities:
Purchases of property, plant and equipment	(23,767)	(39,278)
Proceeds from disposal of property, plant and equipment	66	320
Other investing activities	0	145
Net cash used in investing activities	(23,701)	(38,813)
Cash flows provided by financing activities:
Proceeds from exercise of stock options and sale of investment shares	2,010	6,768
Net cash paid on note payable and finance leases	(475)	(435)
Line of credit borrowings	30,000	0
Line of credit repayments	(15,000)	0
Payment of tax withholding on stock-based payment awards and investment shares	(2,380)	(5,951)
Net cash provided by financing activities	14,155	382
Change in cash and cash equivalents and restricted cash	(50,552)	(18,624)
Cash and cash equivalents and restricted cash at beginning of year	66,321	163,282
Cash and cash equivalents at end of period	15,769	144,658
Supplemental disclosure of cash flow information:
Income taxes refunded (paid), net	1,497	(4)
Cash paid for amounts included in measurement of lease liabilities
Operating cash flows from operating leases	1,951	2,602
Operating cash flows from finance leases	23	34
Financing cash flows from finance leases	400	364
Change in purchase of property, plant and equipment in accounts payable and accrued expenses	$ 73	$ (8,997)