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Summary of Significant Accounting Policies, Derivative Financial Instruments (Details) - Maximum [Member]	12 Months Ended
	Dec. 31, 2021
Derivative Financial Instruments [Abstract]
Number of months for contracts to mature	18 months
Forward Exchange Contracts [Member]
Derivative Financial Instruments [Abstract]
Number of months for contracts to mature	18 months

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- Definition

Number of months for contracts to mature in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	sxt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeForwardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: