Name:	sxt_EmployeeBenefitPlanDefinedContributionPlanCumulativeHoursOfServiceRequirement
Namespace Prefix:	sxt_
Data Type:	xbrli:decimalItemType
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Period Type:	duration

The minimum number of hours of service required for an employee to become eligible to participate in entity defined contribution plan.

No definition available.

Name:	sxt_EmployeeBenefitPlanDefinedContributionPlanMinimumHoursOfServiceRequirement
Namespace Prefix:	sxt_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

The age at which participants become eligible for contributions under employee benefit plan.

No definition available.

Name:	sxt_EmployeeBenefitPlanEmployerContributionParticipantsAge
Namespace Prefix:	sxt_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

Participants vested account balance threshold value to determines that the participant may elect to receive a lump-sum distribution or a direct rollover to an individual retirement account, which will be established by the Company for the participant upon separation from service due to retirement or termination.

No definition available.

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

Participants vested account balance threshold value to determines that the participant will automatically receive a lump-sum distribution equal to his or her vested account balance upon separation from service due to retirement or termination.

No definition available.

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

Participants vested account balance threshold value to determines that the participant may receive his or her benefits in a lump-sum cash payment, lump-sum rollover into an individual retirement account or another employer’s eligible retirement plan or defer receiving benefits until a future date upon separation from service due to retirement or termination.

No definition available.

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

Amount of increase in net asset available for benefit from cash contribution from employer of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477063/962-205-45-7

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Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of increase in net asset available for benefit from noncash contribution from employer of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477063/962-205-45-7

Name:	us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForEmployerContributionNoncash
Namespace Prefix:	us-gaap-ebp_
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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-SubTopic 205
-Topic 962
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

Name:	us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of plan asset, in forfeited nonvested account, no longer allocated to participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

Name:	us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Percentage of maximum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation.