Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Operating activities
Net loss	$ (145,823)	$ (11,934)	$ (163,284)	$ (5,895)
Loss from discontinued operations	(140,143)	(14,293)	(143,126)	(10,203)
Earnings (loss) from continuing operations	(5,680)	2,359	(20,158)	4,308
Items not affecting cash:
Depreciation and amortization	7,983	5,837	22,873	16,828
Amortization of debt issuance costs	298	413	1,093	1,184
Deferred income taxes	282	7,590	4,260	11,237
Stock-based compensation	3,068	4,092	8,989	9,691
Other	(96)	(74)	410	1,822
Changes in operating assets and liabilities, net of divestitures	(31,708)	(10,878)	(25,852)	(21,651)
Net cash provided by (used in) operating activities of continuing operations	(25,853)	9,339	(8,385)	23,419
Net cash provided by operating activities of discontinued operations	16,521	10,634	18,798	9,643
Net cash provided by (used in) operating activities	(9,332)	19,973	10,413	33,062
Investing activities
Additions to property, plant and equipment	(4,716)	(37,371)	(37,272)	(98,742)
Proceeds from sale of property, plant and equipment	0	90	0	4,182
Net cash used in investing activities of continuing operations	(4,716)	(37,281)	(37,272)	(94,560)
Net cash provided by (used in) investing activities of discontinued operations	(127)	15,373	(1,085)	7,750
Net cash used in investing activities	(4,843)	(21,908)	(38,357)	(86,810)
Financing activities
Increase in borrowings under revolving credit facilities	16,207	1,761	22,718	19,724
Borrowings of long-term debt	507	33,094	19,840	74,197
Repayment of long-term debt	(10,629)	(6,172)	(31,435)	(13,557)
Proceeds from notes payable	42,507	0	77,602	0
Repayment of notes payable	(17,788)	0	(33,156)	0
Proceeds from the exercise of stock options and employee share purchases	255	612	831	1,203
Payment of withholding taxes on stock-based awards	(114)	(631)	(9,121)	(1,602)
Payment of cash dividends on preferred stock	(304)	(609)	(1,427)	(1,827)
Payment of share issuance costs	(68)	0	(191)	0
Payment of debt issuance costs	0	(113)	0	(672)
Net cash provided by financing activities of continuing operations	30,573	27,942	45,661	77,466
Net cash used in financing activities of discontinued operations	(13,835)	(26,101)	(14,852)	(23,486)
Net cash provided by financing activities	16,738	1,841	30,809	53,980
Increase (decrease) in cash, cash equivalents and restricted cash in the period	2,563	(94)	2,865	232
Cash and cash equivalents, beginning of the period	981	553	679	227
Cash, cash equivalents and restricted cash, end of the period	$ 3,544	$ 459	$ 3,544	$ 459