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GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Intangible assets [Abstract]
Cost	$ 23,150,000us-gaap_FiniteLivedIntangibleAssetsGross	$ 26,180,000us-gaap_FiniteLivedIntangibleAssetsGross
Accumulated Amortization	(14,390,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization	(15,634,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Intangible assets expense [Abstract]
Amortization expense of intangible assets	1,200,000us-gaap_AmortizationOfIntangibleAssets	1,300,000us-gaap_AmortizationOfIntangibleAssets	1,400,000us-gaap_AmortizationOfIntangibleAssets
2015	1,200,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2016	1,200,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2017	1,200,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2018	1,200,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2019	1,200,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Goodwill activity [Roll Forward]
Balance as of beginning of period	457,269,000us-gaap_Goodwill	451,318,000us-gaap_Goodwill
Currency translation impact	(32,997,000)us-gaap_GoodwillTranslationAdjustments	5,951,000us-gaap_GoodwillTranslationAdjustments
Impairment	(158,000)us-gaap_GoodwillImpairmentLoss
Balance as of end of period	424,114,000us-gaap_Goodwill	457,269,000us-gaap_Goodwill	451,318,000us-gaap_Goodwill
Flavor and Fragrances [Member]
Goodwill activity [Roll Forward]
Balance as of beginning of period	136,637,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sxt_FlavorAndFragnancesMember	135,784,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sxt_FlavorAndFragnancesMember
Currency translation impact	(10,614,000)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = sxt_FlavorAndFragnancesMember	853,000us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = sxt_FlavorAndFragnancesMember
Impairment	0us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = sxt_FlavorAndFragnancesMember
Balance as of end of period	126,023,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sxt_FlavorAndFragnancesMember	136,637,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sxt_FlavorAndFragnancesMember
Color [Member]
Goodwill activity [Roll Forward]
Balance as of beginning of period	317,323,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sxt_ColorMember	311,650,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sxt_ColorMember
Currency translation impact	(22,050,000)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = sxt_ColorMember	5,673,000us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = sxt_ColorMember
Impairment	(158,000)us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = sxt_ColorMember
Balance as of end of period	295,115,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sxt_ColorMember	317,323,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = sxt_ColorMember
Corporate and Other [Member]
Goodwill activity [Roll Forward]
Balance as of beginning of period	3,309,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember	3,884,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Currency translation impact	(333,000)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember	(575,000)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Impairment	0us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Balance as of end of period	2,976,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember	3,309,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Weighted Average [Member]
Intangible assets [Abstract]
Weighted Average Amortization Years	19 years 8 months 12 days
Technological Know How [Member]
Intangible assets [Abstract]
Cost	6,459,000us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeSecretsMember	8,606,000us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeSecretsMember
Accumulated Amortization	(4,352,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeSecretsMember	(5,328,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeSecretsMember
Technological Know How [Member] | Weighted Average [Member]
Intangible assets [Abstract]
Weighted Average Amortization Years	20 years
Customer Relationships [Member]
Intangible assets [Abstract]
Cost	6,938,000us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember	7,944,000us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Accumulated Amortization	(4,170,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember	(4,359,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Customer Relationships [Member] | Weighted Average [Member]
Intangible assets [Abstract]
Weighted Average Amortization Years	20 years
Patents, Trademarks, Noncompete Agreements and Other [Member]
Intangible assets [Abstract]
Cost	9,753,000us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = sxt_PatentsTrademarksNoncompeteAgreementsAndOtherMember	9,630,000us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = sxt_PatentsTrademarksNoncompeteAgreementsAndOtherMember
Accumulated Amortization	$ (5,868,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = sxt_PatentsTrademarksNoncompeteAgreementsAndOtherMember	$ (5,947,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = sxt_PatentsTrademarksNoncompeteAgreementsAndOtherMember
Patents, Trademarks, Noncompete Agreements and Other [Member] | Weighted Average [Member]
Intangible assets [Abstract]
Weighted Average Amortization Years	19 years 2 months 12 days

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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