Consolidated Condensed Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
NET INCOME (LOSS)	$ (185)	$ 1,412	$ 3,566	$ 3,694
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Unrealized loss on interest rate swaps	(15)	(418)	(1,242)	(171)
Reclassification of loss into earnings from interest rate swaps	54	52	160	124
Amortization of unrealized loss on dedesignated interest rate swaps	0	0	0	98
Reclassification of net actuarial gain into earnings from postretirement benefit plans	(6)	(6)	(18)	(18)
Reclassification of prior service credits into earnings from postretirement benefit plans	(14)	(14)	(41)	(41)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	19	(386)	(1,141)	(8)
COMPREHENSIVE INCOME (LOSS)	$ (166)	$ 1,026	$ 2,425	$ 3,686