ACQUISITION OF PERFORMANCE CHEMICALS & INGREDIENTS COMPANY (Details) - USD ($)		3 Months Ended		6 Months Ended
	May. 07, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Estimated fair values of the assets acquired and liabilities assumed [Abstract]
Indemnification asset		$ 1,976,000		$ 1,976,000
Goodwill		383,906,000		383,906,000		$ 383,906,000
Unaudited pro forma information [Abstract]
SensoryEffects actual results included in the Company's consolidated income statement, Net Sales		54,018,000	$ 36,395,000	108,558,000	$ 36,395,000
SensoryEffects actual results included in the Company's consolidated income statement, Net Earnings		2,787,000	(457,000)	5,693,000	(457,000)
Supplemental pro forma combined financial information, Net Sales		134,773,000	157,635,000	279,635,000	302,242,000
Supplemental pro forma combined financial information, Net Earnings		$ 14,916,000	$ 14,726,000	$ 30,088,000	$ 26,483,000
Basic earnings per share (in dollars per share)		$ 0.48	$ 0.49	$ 0.97	$ 0.88
Diluted earnings per share (in dollars per share)		$ 0.47	$ 0.47	$ 0.95	$ 0.85
Performance Chemicals and Ingredients Company [Member]
Business Acquisition [Line Items]
Percentage owned of the "Acquisition" (in hundredth)	100.00%
Purchase price	$ 569,000,000
Tax deductible for income tax purposes	20,466,000
Estimated fair values of the assets acquired and liabilities assumed [Abstract]
Cash and cash equivalents	2,635,000
Accounts receivable	25,674,000
Inventories	32,000,000
Property, plant and equipment	75,850,000
Customer relationships	130,300,000
Trade names	31,100,000
Developed technology	3,200,000
Other assets	3,955,000
Indemnification asset	1,650,000
Trade accounts payable	(10,427,000)
Accrued expenses	(6,326,000)
Bank debt	(75,550,000)
Deferred income taxes	(75,760,000)
Goodwill	355,391,000
Amount paid to shareholders	493,692,000
SensoryEffects bank debt paid on purchase date	75,550,000
Total amount paid on acquisition date	$ 569,242,000
Unaudited pro forma information [Abstract]
Acquisition-related costs			$ 14,944,000		$ 16,212,000
Non-recurring expenses related to the fair value adjustments to acquisition-date inventory			$ 4,735,000		$ 4,735,000
Performance Chemicals and Ingredients Company [Member] | Minimum [Member]
Estimated fair values of the assets acquired and liabilities assumed [Abstract]
Increase in indemnification asset balance				$ 54,000
Performance Chemicals and Ingredients Company [Member] | Maximum [Member]
Estimated fair values of the assets acquired and liabilities assumed [Abstract]
Increase in indemnification asset balance				$ 1,976,000
Performance Chemicals and Ingredients Company [Member] | Customer Relationships [Member]
Estimated fair values of the assets acquired and liabilities assumed [Abstract]
Useful life of intangible assets acquired		10 years
Performance Chemicals and Ingredients Company [Member] | Trade Names [Member]
Estimated fair values of the assets acquired and liabilities assumed [Abstract]
Useful life of intangible assets acquired		10 years
Performance Chemicals and Ingredients Company [Member] | Developed Technology [Member]
Estimated fair values of the assets acquired and liabilities assumed [Abstract]
Useful life of intangible assets acquired		5 years