Significant Accounting Policies (Schedule of consolidated statements of operations) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended							6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Dec. 30, 2023	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Jun. 29, 2024	Jul. 01, 2023	Sep. 28, 2024	Sep. 30, 2023	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Consolidated Statements of Operations
Revenues	$ 175,856	$ 169,541	$ 184,422	$ 178,057	$ 152,541	$ 141,163	$ 154,969	$ 353,963	$ 296,132	$ 529,819	$ 448,673	$ 723,728	$ 626,730	$ 591,395
Cost of goods sold	152,988	148,349	153,370	153,013	133,088	123,201	131,428	301,719	254,629	454,707	387,717	627,424	540,730	493,257
Gross profit	22,868	21,192	31,052	25,044	19,453	17,962	23,541	52,244	41,503	75,112	60,956	96,304	86,000	98,138
Selling, general and administrative expenses	21,052	17,784	22,334	20,251	18,377	16,957	23,069	40,118	40,026	61,170	58,403	79,406	78,654	78,469
Intangible amortization	446	446	446	446	446	446	446	892	892	1,338	1,338	1,784	1,784	1,784
Other expense, net	450	(304)	(1,800)	475	0	(62)	42	(2,104)	(20)	(1,654)	(20)		455	1,651
Foreign exchange loss	113	1,310	(51)	66	(37)	92	(11)	1,259	81	1,372	44	1,357	110	(107)
Operating income (loss)	807	1,956	10,123	3,806	667	529	(5)	12,079	524	12,886	1,191	15,590	4,997	16,341
Interest expense, net	6,762	6,410	6,050	7,518	7,162	6,565	5,664	12,460	12,229	19,222	19,391	24,908	26,909	13,156
Earnings (loss) from continuing operations before income taxes	(6,191)	(4,454)	4,073	(3,712)	(6,495)	(6,036)	(5,669)	(381)	(11,705)	(6,572)	(18,200)	(10,004)	(21,912)	3,185
Income tax expense	23	(17)	277	(709)	0	6,282	(2,304)	260	3,978	283	3,978	1,470	3,269	896
Earnings (loss) from continuing operations	(6,214)	(4,437)	3,796	(3,003)	(6,495)	(12,318)	(3,365)	(641)	(15,683)	(6,855)	(22,178)	(11,474)	(25,181)	2,289
Net loss from discontinued operations	0	(897)	(917)	(10,482)	(140,143)	(7,187)	4,204	(1,814)	(2,983)	(1,814)	(143,126)	(5,919)	(153,608)	(8,722)
Net loss	(6,214)	(5,334)	2,879	(13,485)	(146,638)	(19,505)	839	(2,455)	(18,666)	(8,669)	(165,304)	(17,393)	(178,789)	(6,433)
Dividends and accretion on preferred stock	(137)	169	(433)	(429)	(426)	(422)	(704)	(264)	(1,126)	(401)	(1,552)	(539)	(1,981)	(3,109)
Loss attributable to common shareholders	$ (6,351)	$ (5,165)	$ 2,446	$ (13,914)	$ (147,064)	$ (19,927)	$ 135	$ (2,719)	$ (19,792)	$ (9,070)	$ (166,856)	$ (17,932)	$ (180,770)	$ (9,542)
Basic and diluted earnings (loss) per share
Earnings (loss) from continuing operations operations attributable to common shareholders -Basic	$ (0.05)	$ (0.04)	$ 0.03	$ (0.03)	$ (0.06)	$ (0.11)	$ (0.04)	$ (0.01)	$ (0.15)	$ (0.06)	$ (0.21)	$ (0.1)	$ (0.24)	$ (0.01)
Earnings (loss) from continuing operations operations attributable to common shareholders -Diluted	(0.05)	(0.04)	0.03	(0.03)	(0.06)	(0.11)	(0.04)	(0.01)	(0.15)	(0.06)	(0.21)	(0.1)	(0.24)	(0.01)
Loss from discontinued operations - Basic	0	(0.01)	(0.01)	(0.09)	(1.21)	(0.06)	0.04	(0.02)	(0.03)	(0.02)	(1.26)	(0.05)	(1.34)	(0.08)
Loss from discontinued operations - Diluted	0	(0.01)	(0.01)	(0.09)	(1.21)	(0.06)	0.04	(0.02)	(0.03)	(0.02)	(1.26)	(0.05)	(1.34)	(0.08)
Loss attributable to common shareholders - Basic	(0.05)	(0.04)	0.02	(0.12)	(1.27)	(0.17)	0	(0.02)	(0.18)	(0.08)	(1.47)	(0.15)	(1.58)	(0.09)
Loss attributable to common shareholders - Diluted	$ (0.05)	$ (0.04)	$ 0.02	$ (0.12)	$ (1.27)	$ (0.17)	$ 0	$ (0.02)	$ (0.18)	$ (0.08)	$ (1.47)	$ (0.15)	$ (1.58)	$ (0.09)
As Previously Reported [Member]
Consolidated Statements of Operations
Revenues	$ 176,216	$ 170,995	$ 182,848	$ 181,624	$ 152,541	$ 141,163	$ 154,969	$ 353,843	$ 296,132	$ 530,059	$ 448,673		$ 630,297	$ 591,395
Cost of goods sold	152,632	149,147	151,101	155,983	132,273	122,534	130,890	300,248	253,424	452,880	385,697		541,680	491,665
Gross profit	23,584	21,848	31,747	25,641	20,268	18,629	24,079	53,595	42,708	77,179	62,976		88,617	99,730
Selling, general and administrative expenses	21,052	17,784	22,988	19,597	18,377	16,957	23,069	40,772	40,026	61,824	58,403		78,000	78,469
Intangible amortization	446	446	446	446	446	446	446	892	892	1,338	1,338		1,784	1,784
Other expense, net	450	(304)	(1,800)	475	0	(62)	42	(2,104)	(20)	(1,654)	(20)		455	1,651
Foreign exchange loss	113	1,310	(51)	66	(37)	92	(11)	1,259	81	1,372	44		110	(107)
Operating income (loss)	1,523	2,612	10,164	5,057	1,482	1,196	533	12,776	1,729	14,299	3,211		8,268	17,933
Interest expense, net	6,762	6,410	6,050	7,518	7,162	6,565	5,664	12,460	12,229	19,222	19,391		26,909	13,156
Earnings (loss) from continuing operations before income taxes	(5,475)	(3,798)	4,114	(2,461)	(5,680)	(5,369)	(5,131)	316	(10,500)	(5,159)	(16,180)		(18,641)	4,777
Income tax expense	23	(17)	277	(709)	0	6,282	(2,304)	260	3,978	283	3,978		3,269	896
Earnings (loss) from continuing operations	(5,498)	(3,781)	3,837	(1,752)	(5,680)	(11,651)	(2,827)	56	(14,478)	(5,442)	(20,158)		(21,910)	3,881
Net loss from discontinued operations	0	(897)	(1,417)	(9,982)	(140,143)	(7,187)	4,204	(2,314)	(2,983)	(2,314)	(143,126)		(153,108)	(8,722)
Net loss	(5,498)	(4,678)	2,420	(11,734)	(145,823)	(18,838)	1,377	(2,258)	(17,461)	(7,756)	(163,284)		(175,018)	(4,841)
Dividends and accretion on preferred stock	(137)	169	(433)	(429)	(426)	(422)	(704)	(264)	(1,126)	(401)	(1,552)		(1,981)	(3,109)
Loss attributable to common shareholders	$ (5,635)	$ (4,509)	$ 1,987	$ (12,163)	$ (146,249)	$ (19,260)	$ 673	$ (2,522)	$ (18,587)	$ (8,157)	$ (164,836)		$ (176,999)	$ (7,950)
Basic and diluted earnings (loss) per share
Earnings (loss) from continuing operations operations attributable to common shareholders -Basic	$ (0.05)	$ (0.03)	$ 0.03	$ (0.02)	$ (0.05)	$ (0.1)	$ (0.03)	$ (0)	$ (0.14)	$ (0.05)	$ (0.19)		$ (0.21)	$ 0.01
Earnings (loss) from continuing operations operations attributable to common shareholders -Diluted	(0.05)	(0.03)	0.03	(0.02)	(0.05)	(0.1)	(0.03)	(0)	(0.14)	(0.05)	(0.19)		(0.21)	0.01
Loss from discontinued operations - Basic	0	(0.01)	(0.01)	(0.09)	(1.21)	(0.06)	0.04	(0.02)	(0.03)	0.02	(1.26)		(1.34)	(0.08)
Loss from discontinued operations - Diluted	0	(0.01)	(0.01)	(0.09)	(1.21)	(0.06)	0.04	(0.02)	(0.03)	0.02	(1.26)		(1.34)	(0.08)
Loss attributable to common shareholders - Basic	(0.05)	(0.04)	0.02	(0.11)	(1.26)	(0.17)	0.01	(0.02)	(0.16)	(0.07)	(1.45)		(1.55)	(0.07)
Loss attributable to common shareholders - Diluted	$ (0.05)	$ (0.04)	$ 0.02	$ (0.11)	$ (1.26)	$ (0.17)	$ 0.01	$ (0.02)	$ (0.16)	$ (0.07)	$ (1.45)		$ (1.55)	$ (0.07)
Adjustments [Member]
Consolidated Statements of Operations
Revenues	$ (360)	$ (1,454)	$ 1,574	$ (3,567)	$ 0	$ 0	$ 0	$ 120	$ 0	$ (240)	$ 0		$ (3,567)	$ 0
Cost of goods sold	356	(798)	2,269	(2,970)	815	667	538	1,471	1,205	1,827	2,020		(950)	1,592
Gross profit	(716)	(656)	(695)	(597)	(815)	(667)	(538)	(1,351)	(1,205)	(2,067)	(2,020)		(2,617)	(1,592)
Selling, general and administrative expenses	0	0	(654)	654	0	0	0	(654)	0	(654)	0		654	0
Intangible amortization	0	0	0	0	0	0	0	0	0	0	0		0	0
Other expense, net	0	0	0	0	0	0	0	0	0	0	0		0	0
Foreign exchange loss	0	0	0	0	0	0	0	0	0	0	0		0	0
Operating income (loss)	(716)	(656)	(41)	(1,251)	(815)	(667)	(538)	(697)	(1,205)	(1,413)	(2,020)		(3,271)	(1,592)
Interest expense, net	0	0	0	0	0	0	0	0	0	0	0		0	0
Earnings (loss) from continuing operations before income taxes	(716)	(656)	(41)	(1,251)	(815)	(667)	(538)	(697)	(1,205)	(1,413)	(2,020)		(3,271)	(1,592)
Income tax expense	0	0	0	0	0	0	0	0	0	0	0		0	0
Earnings (loss) from continuing operations	(716)	(656)	(41)	(1,251)	(815)	(667)	(538)	(697)	(1,205)	(1,413)	(2,020)		(3,271)	(1,592)
Net loss from discontinued operations	0	0	500	(500)	0	0	0	500	0	500	0		(500)	0
Net loss	(716)	(656)	459	(1,751)	(815)	(667)	(538)	(197)	(1,205)	(913)	(2,020)		(3,771)	(1,592)
Dividends and accretion on preferred stock	0	0	0	0	0	0	0	0	0	0	0		0	0
Loss attributable to common shareholders	$ (716)	$ (656)	$ 459	$ (1,751)	$ (815)	$ (667)	$ (538)	$ (197)	$ (1,205)	$ (913)	$ (2,020)		$ (3,771)	$ (1,592)
Basic and diluted earnings (loss) per share
Earnings (loss) from continuing operations operations attributable to common shareholders -Basic	$ (0.01)	$ (0.01)	$ (0)	$ (0.01)	$ (0.01)	$ (0.01)	$ (0)	$ (0.01)	$ (0.01)	$ (0.01)	$ (0.02)		$ (0.03)	$ (0.01)
Earnings (loss) from continuing operations operations attributable to common shareholders -Diluted	(0.01)	(0.01)	(0)	(0.01)	(0.01)	(0.01)	(0)	(0.01)	(0.01)	(0.01)	(0.02)		(0.03)	(0.01)
Loss from discontinued operations - Basic	0	0	0	(0)	0	0	0	0	0	0	0		(0)
Loss from discontinued operations - Diluted	0	0	0	(0)	0	0	0	0	0	0	0		(0)
Loss attributable to common shareholders - Basic	(0.01)	(0.01)	0	(0.02)	(0.01)	(0.01)	(0)	(0)	(0.01)	(0.01)	(0.02)		(0.03)	(0.01)
Loss attributable to common shareholders - Diluted	$ (0.01)	$ (0.01)	$ 0	$ (0.02)	$ (0.01)	$ (0.01)	$ (0)	$ (0)	$ (0.01)	$ (0.01)	$ (0.02)		$ (0.03)	$ (0.01)