Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Net loss	$ (3,367)	$ (416)
Other comprehensive income:
Amortization of actuarial loss		25
Adjustments to net periodic postretirement benefit cost		25
Settlement of employee benefit obligations directly related to the disposal transaction	2,422
Comprehensive loss	$ (945)	$ (391)