Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for PES Acquisition (Details) (USD $) In Thousands, unless otherwise specified	Apr. 04, 2015	Jan. 03, 2015	Mar. 31, 2014	Sep. 08, 2014
Business Acquisition [Line Items]
Business Combination, Contingent Consideration	$ 6,619	$ 9,200
PES [Member]
Business Acquisition [Line Items]
Current assets			2,058
Property, plant and equipment			3,493
Goodwill			11,124
Other intangibles			1,618
Other asset			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
Net assets acquired and liabilities assumed			17,477
as initially reported | PES [Member]
Business Acquisition [Line Items]
Current assets			2,211
Property, plant and equipment			3,493
Goodwill			10,792
Other intangibles			1,600
Other asset			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
Net assets acquired and liabilities assumed			17,301
Scenario, Adjustment [Member] | PES [Member]
Business Acquisition [Line Items]
Current assets			(153)
Property, plant and equipment			0
Goodwill			332
Other intangibles			18
Other asset			(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
Net assets acquired and liabilities assumed				$ 176