Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for PES Acquisition (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Jan. 03, 2015	Mar. 31, 2014
Business Acquisition [Line Items]
Business Combination, Contingent Consideration	$ 11,706		$ 7,053
PES [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets				$ 2,058
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				3,493
Goodwill				11,124
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				1,618
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets				0
Current liabilities				(816)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other				(2,477)
Consideration paid at closing				15,000
Business Combination, Contingent Consideration				2,477
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				17,477
PES [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 0	$ 15,000
Scenario, Previously Reported [Member] | PES [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets				2,211
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				3,493
Goodwill				10,792
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				1,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets				21
Current liabilities				(816)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other				(2,301)
Consideration paid at closing				15,000
Business Combination, Contingent Consideration				2,301
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				17,301
Scenario, Adjustment [Member] | PES [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets				(153)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				0
Goodwill				332
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				18
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets				(21)
Current liabilities				0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other				(176)
Consideration paid at closing				0
Business Combination, Contingent Consideration				176
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				$ 176