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Discontinued Operations (Details) - Discontinued Operations - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Apr. 01, 2017
Income Statement and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net sales $ 0 $ 6,865
Cost of sales 0 4,507
Gross profit 0 2,358
Selling, general and administrative expenses 0 3,731
Operating loss 0 (1,373)
Other expenses 0 303
Net (loss) on disposal of businesses 0 (766)
Loss from discontinued operations before income tax expense 0 (2,442)
Income tax expense 0 23
Net loss from discontinued operations, net of tax $ 0 $ (2,465)