Business Combinations (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended	6 Months Ended		12 Months Ended
	Dec. 23, 2015	Sep. 18, 2015	Jul. 03, 2016	Oct. 02, 2016	Sep. 27, 2015	Apr. 03, 2016
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired				$ 2,199	$ 4,450
Proceeds from Lines of Credit						$ 131,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					37.50%
Stauber Performance Ingredients [Member]
Business Acquisition [Line Items]
Business Acquisition, Preliminary purchase price	$ 157,000
Business Combination, Consideration Transferred	158,200
Payments to Acquire Businesses, Net of Cash Acquired	156,700
Payments to Acquire Businesses, Gross	156,000		$ 2,199
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period						118,000
Property, plant, and equipment	10,989
Finite-lived Intangible Assets Acquired	$ 71,459
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	16 years 4 months
Deferred income taxes	$ 28,600
Goodwill	84,200
Davis Supply Inc. [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 4,500
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period						$ 5,000
Property, plant, and equipment		78
Customer Relationships [Member] | Stauber Performance Ingredients [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 66,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	17 years
Customer Relationships [Member] | Davis Supply Inc. [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 2,400
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		20 years
Noncompete Agreements [Member] | Stauber Performance Ingredients [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 1,300
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years 3 months
Noncompete Agreements [Member] | Davis Supply Inc. [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired		$ 100
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		5 years
Order or Production Backlog [Member] | Stauber Performance Ingredients [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 100
Trade Names [Member] | Stauber Performance Ingredients [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 4,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Pro Forma [Member] | Stauber Performance Ingredients [Member]
Business Acquisition [Line Items]
Nonoperating Income (Expense)					$ 900
Income (Loss) from Extraordinary Items, before Tax, Per Diluted Share					$ 0.05