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24. Segment Information (Details - Balance Sheet) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 30, 2017
Assets $ 36,439 $ 46,891
Goodwill and intangible assets 22,852 24,718
Recycling [Member]    
Assets 13,451 21,745
Goodwill and intangible assets 19 19
Technology [Member]    
Assets 22,988 25,146
Goodwill and intangible assets $ 22,833 $ 24,699