CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014
Net income (loss)	$ 465	$ (2,556)	$ 4,423	$ (26,682)
Other comprehensive income (loss):
Amortization of prior service cost	23	38	69	115
Amortization of actuarial loss	(29)	(18)	(87)	(56)
Adjustments to net periodic benefit cost	(6)	20	(18)	59
Comprehensive income (loss)	$ 471	$ (2,576)	$ 4,441	$ (26,741)