CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 25, 2022	Jun. 26, 2021	Jun. 25, 2022	Jun. 26, 2021
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)		$ (4,487)	$ 3,349	$ (7,844)	$ 1,321
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Unrealized gain (loss) on interest rate swaps		0	5	0	43
Income taxes		0	0	0	0
Unrealized gain (loss) on interest rate swaps, net		0	5	0	43
Reclassification of (gain) loss into earnings from interest rate swaps	[1]	0	222	(7)	443
Income taxes		0	64	(2)	128
Reclassification of (gain) loss into earnings from interest rate swaps, net		0	158	(5)	315
Reclassification of unrealized loss into earnings from dedesignated interest rate swaps	[2]	0	0	210	0
Income taxes		0	0	33	0
Reclassification of unrealized loss into earnings from dedesignated interest rate swaps, net		0	0	177	0
Reclassification of net actuarial gain into earnings from postretirement benefit plans	[2]	0	(6)	(2)	(12)
Income taxes		0	0	0	0
Reclassification of net actuarial gain into earnings from postretirement benefit plans, net		0	(6)	(2)	(12)
TOTAL OTHER COMPREHENSIVE INCOME, NET OF TAX		0	157	170	346
COMPREHENSIVE INCOME (LOSS)		$ (4,487)	$ 3,506	$ (7,674)	$ 1,667

[1] Amounts for cash flow hedges reclassified from accumulated other comprehensive income (loss) to net loss were included in interest expense in the Company's Consolidated Condensed Statements of Operations.

[2] Amounts for postretirement plans reclassified from accumulated other comprehensive income (loss) to net loss were included in selling and administrative expenses in the Company's Consolidated Condensed Statements of Operations.