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Commitments and Contingencies (Narrative) (Details)
 3 Months Ended 6 Months Ended
Jan. 26, 2016
USD ($)
patent
Jul. 01, 2016
USD ($)
Jan. 01, 2016
USD ($)
Jul. 01, 2016
USD ($)
Gain Contingencies [Line Items]        
Gain (Loss) Related to Litigation Settlement       $ 0
Product Warranty Description       The Company generally warrants that its products will meet customer specifications and will be free from defects in materials and workmanship.
Foreign Currency Contracts Description   The Company enters into forward contracts to purchase Mexican pesos in order to hedge the risk of peso-denominated payments associated with operations at its facilities in Mexico    
Payments for termination of foreign currency contract     $ 2,400,000  
Self-Insurance Medical Liability   $ 3,500,000 4,000,000 $ 3,500,000
Increase (Decrease) in Workers' Compensation Liabilities     900,000  
Workers' Compensation Liability   2,300,000 3,900,000 2,300,000
Positive Outcome of Litigation [Member]        
Gain Contingencies [Line Items]        
Gain Contingency, Patents Found Infringed upon, Number | patent 2      
Litigation Settlement, Amount $ 37,500,000      
Greatbatch Medical And QiG [Member]        
Gain Contingencies [Line Items]        
Maximum Aggregate Loss Under Medical Stop Loss Insurance Per Employee   250,000   250,000
Lake Region Medical [Member]        
Gain Contingencies [Line Items]        
Maximum Loss Per Associate Under Stop Loss Insurance   275,000   275,000
Other Noncurrent Liabilities [Member]        
Gain Contingencies [Line Items]        
Accrual for Environmental Loss Contingencies   $ 1,100,000 $ 1,100,000 $ 1,100,000