Consolidated Condensed Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
NET LOSS		$ (7,060)	$ (1,216)	$ (9,749)	$ (7,888)
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Unrealized loss on interest rate swaps		(139)	(705)	(1,276)	(1,104)
Income taxes		0	0	0	0
Unrealized loss on interest rate swaps, net		(139)	(705)	(1,276)	(1,104)
Reclassification of loss into earnings from interest rate swaps (1)	[1]	365	93	573	149
Income taxes		0	0	0	10
Reclassification of loss into earnings from interest rate swaps, net		365	93	573	139
Reclassification of net actuarial gain into earnings from postretirement benefit plans (2)	[2]	(6)	(7)	(13)	(14)
Income taxes		0	0	0	0
Reclassification of net actuarial gain into earnings from postretirement benefit plans, net		(6)	(7)	(13)	(14)
Reclassification of prior service credits into earnings from postretirement benefit plans (2)	[2]	(1)	(1)	(2)	(2)
Income taxes		0	0	0	0
Reclassification of prior service credits into earnings from postretirement benefit plans, net		(1)	(1)	(2)	(2)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX		219	(620)	(718)	(981)
COMPREHENSIVE LOSS		$ (6,841)	$ (1,836)	$ (10,467)	$ (8,869)

[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.