24. Segment Information (Details - Operations) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Revenues	$ 8,373	$ 10,744	$ 17,286	$ 18,194
Gross profit	2,150	3,989	4,562	5,805
Operating income (loss)	(1,602)	1,577	(3,164)	(54)
Depreciation and amortization	992	247	1,986	504
Interest expense	38	125	629	422
Net income (loss) before provision for income taxes	(1,688)	1,276	(3,738)	4,516
Recycling [Member]
Revenues	8,373	10,744	17,286	18,194
Gross profit	2,150	3,989	4,562	5,805
Operating income (loss)	(390)	1,577	(679)	(54)
Depreciation and amortization	59	247	120	504
Interest expense	38	125	629	422
Net income (loss) before provision for income taxes	(476)	1,276	(1,253)	4,516
Technology [Member]
Revenues	0	0	0	0
Gross profit	0	0	0	0
Operating income (loss)	(1,212)	0	(2,485)	0
Depreciation and amortization	933	0	1,866	0
Interest expense	0	0	0	0
Net income (loss) before provision for income taxes	$ (1,212)	$ 0	$ (2,485)	$ 0