Name:	sxt_AssetsOfDisposalGroupRelatedToAnticipatedSaleOfBusiness
Namespace Prefix:	sxt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Refers to expected amount of write-downs for impairments recognized when long-lived assets are sold.

No definition available.

Name:	sxt_ExpectedImpairmentOfLongLivedAssetsToBeSold
Namespace Prefix:	sxt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount classified as liabilities attributable to disposal group held for sale or disposed of related to the anticipated sale of business.

No definition available.

Name:	sxt_LiabilitiesOfDisposalGroupRelatedToAnticiapatedSaleOfBusiness
Namespace Prefix:	sxt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2611-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Name:	us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.