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Restructuring and Asset Impairment - Severance and Retention Costs by Classification on the Consolidated Statements of Income (Details) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 01, 2017
Mar. 26, 2016
Restructuring Cost and Reserve [Line Items]    
Total severance and transition costs $ 1,017 $ 21
Cost of services provided and products sold (excluding amortization of intangible assets)    
Restructuring Cost and Reserve [Line Items]    
Total severance and transition costs 923 21
Selling, general and administrative    
Restructuring Cost and Reserve [Line Items]    
Total severance and transition costs $ 94 $ 0