Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Net income (loss)	$ 313	$ 14	$ (3,054)	$ (402)
Other comprehensive income:
Amortization of actuarial loss		25		50
Adjustments to net periodic benefit cost		25		50
Settlement of employee benefit obligations directly related to the disposal transaction			2,422
Comprehensive income (loss)	$ 313	$ 39	$ (632)	$ (352)