Service period, description.

No definition available.

Name:	snes_ServicePeriodDescription
Namespace Prefix:	snes_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Sharebased compensation arrangement by sharebased payment award unvested options weighted average remainin contractua lTerm.

+ References

No definition available.

+ Details

Name:	snes_SharebasedCompensationArrangementBySharebasedPaymentAwardUnvestedOptionsWeightedAverageRemainingContractualTerm4
Namespace Prefix:	snes_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Stock options term.

+ References

No definition available.

+ Details

Name:	snes_StockOptionsTerm
Namespace Prefix:	snes_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	snes_StockbasedCompensationDetailsLineItems
Namespace Prefix:	snes_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

Name:	us-gaap_SharePrice
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average grant-date fair value of options vested.

+ References

No definition available.

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_PlanNameAxis=snes_EquityIncentivePlan2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=snes_EquityIncentivePlan2015Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Stock-based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	Jun. 24, 2021	Jul. 08, 2020
Stock-based Compensation (Details) [Line Items]
Service period, description	Options granted under the 2018 Plan generally vest immediately, or ratably over a two- to 36-month period coinciding with their respective service periods.
Stock options term	5 years
Weighted average grant date fair value of options granted (in Dollars per share)	$ 0.3014
Share price (in Dollars per share)	$ 0.351	$ 0.98
Weighted average grant date	15 months
2018 Plan [Member]
Stock-based Compensation (Details) [Line Items]
Common stock available for issuance	1,213,406		3,000,000	800,000
2015 Plan [Member]
Stock-based Compensation (Details) [Line Items]
Common stock available for issuance				122,279
Minimum [Member] \| 2018 Plan [Member]
Stock-based Compensation (Details) [Line Items]
Common stock available for issuance				50,000
Maximum [Member] \| 2018 Plan [Member]
Stock-based Compensation (Details) [Line Items]
Common stock available for issuance				850,000
Restricted Stock Units [Member]
Stock-based Compensation (Details) [Line Items]
Compensation cost not yet recognized (in Dollars)	$ 502