Business Combinations (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Dec. 23, 2015	Sep. 18, 2015	Jul. 03, 2016	Jun. 28, 2015
Business Acquisition [Line Items]
Preliminary purchase price, net of cash acquired			$ 2,199	$ 0
Restricted Cash and Cash Equivalents	$ 7,300
Stauber Performance Ingredients [Member]
Business Acquisition [Line Items]
Cash and cash equivalents (a)	1,502
Trade receivables	15,737
Inventories	10,207
Other Assets	900
Property, plant, and equipment	10,989
Intangible assets	71,459
Accounts payable	(5,398)
Accrued expenses and other current liabilities (a)	(2,925)
Deferred income taxes	(28,445)
Other non-current liabilities	(79)
Net assets acquired	73,947
Goodwill	84,229
Total purchase price	156,000		$ 2,199
Total preliminary purchase price	158,176
Less acquired cash	(1,502)
Preliminary purchase price, net of cash acquired	$ 156,674
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	16 years 4 months
Pro forma net sales				133,750
Pro forma net income				$ 8,050
Pro forma basic earnings per share				$ 0.76
Pro forma diluted earnings per share				$ 0.76
Davis Supply Inc. [Member]
Business Acquisition [Line Items]
Inventories		$ 145
Property, plant, and equipment		78
Intangible assets		2,532
Net assets acquired		2,755
Goodwill		1,745
Total purchase price		4,500
Customer Relationships [Member] | Stauber Performance Ingredients [Member]
Business Acquisition [Line Items]
Intangible assets	$ 66,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	17 years
Customer Relationships [Member] | Davis Supply Inc. [Member]
Business Acquisition [Line Items]
Intangible assets		$ 2,400
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		20 years
Noncompete Agreements [Member] | Stauber Performance Ingredients [Member]
Business Acquisition [Line Items]
Intangible assets	$ 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]
Intangible assets		$ 100
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		5 years
Trade Names [Member] | Stauber Performance Ingredients [Member]
Business Acquisition [Line Items]
Intangible assets	$ 4,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years