Loss Per Share (Disclosure of basic and diluted Loss Per Share) (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
Numerator for diluted earnings (loss) per share:
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
Less: dividends and accretion on preferred stock	$ (137)	$ 169	$ (433)	$ (429)	$ (426)	$ (422)	$ (704)	$ (264)	$ (1,126)	$ (401)	$ (1,552)	(539)	(1,981)	(3,109)
Earnings (loss) from continuing operations attributable to common shareholders												(12,013)	(27,162)	(820)
Loss from discontinued operations												(5,919)	(153,608)	(8,722)
Loss attributable to common shareholders												$ (17,932)	$ (180,770)	$ (9,542)
Denominator
Basic weighted-average number of shares outstanding												116,617	114,226	107,659
Diluted weighted-average number of shares outstanding												116,617	114,226	107,659
Basic Earnings (Loss) Per Share
Earnings (loss) from continuing operations	$ (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	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	(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)
Diluted Earnings (Loss) Per Share
Loss from continuing operations attributable to common shareholders	(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	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	$ (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)
Stock options, restricted stock units and performance share units [Member]
Denominator
Diluted weighted-average number of shares outstanding												0	0	0
Series B-1 Preferred Stock [Member]
Denominator
Diluted weighted-average number of shares outstanding												0	0	0