Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2023	Sep. 29, 2022	Sep. 28, 2023	Sep. 29, 2022
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ 12,234	$ 3,289	$ 16,234	$ (2,653)
Other comprehensive income (loss), net of tax:
Amortization of the net actuarial loss and prior service credit related to the pension, net of tax effect (benefit) of $(4), $68, $(13) and $202, respectively	(12)	190	(35)	570
Fair market value adjustment of interest rate swap, net of tax effect (benefit) of $0, $17, $(8) and $133, respectively	0	48	(22)	377
Reclassification adjustment on interest rate swap included in interest expense, net of tax effect (benefit) of $0, $9, $(20) and $81, respectively	0	22	(58)	228
Other comprehensive income (loss)	(12)	260	(115)	1,175
Comprehensive income (loss)	$ 12,222	$ 3,549	$ 16,119	$ (1,478)