v3.25.0.1

Commitment and Contingencies (Details) - Cowen and Company - USD ($) | May 11, 2023 | Aug. 06, 2021
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Litigation |  |
Service fees sought |  | $ 1,350,000
Agreed settlement amount | $ 1,350,000 |
Litigation settlement, interest percent | 9.00% |
Litigation settlement, attorney fees payable | $ 675,000 |
Litigation settlement, attorney fees to be paid up front | 275,000 |
Litigation settlement, attorney fees to be paid after six months | 200,000 |
Litigation settlement, attorney fees to be paid after twelve months | $ 200,000 |

X
- Definition Amount of attorney fees payable for settlement of litigation. + References No definition available. + Details
Name: | rsls_LitigationSettlementAttorneyFeesPayable
Namespace Prefix: | rsls_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percent of interest on amount payable on settlement of litigation. + References No definition available. + Details
Name: | rsls_LitigationSettlementInterestPercent
Namespace Prefix: | rsls_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of attorney fees paid upfront for settlement of litigation. + References No definition available. + Details
Name: | rsls_LitigationSettlementPaymentsOfAttorneyFeesTrancheOne
Namespace Prefix: | rsls_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of attorney fees to be paid after twelve months. + References No definition available. + Details
Name: | rsls_LitigationSettlementPaymentsOfAttorneyFeesTrancheThree
Namespace Prefix: | rsls_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of attorney fees to be paid after six months. + References No definition available. + Details
Name: | rsls_LitigationSettlementPaymentsOfAttorneyFeesTrancheTwo
Namespace Prefix: | rsls_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The value (monetary amount) of the service fees the plaintiff seeks in the legal matter. + References No definition available. + Details
Name: | rsls_LossContingencyServiceFeesSoughtValue
Namespace Prefix: | rsls_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount awarded to other party in judgment or settlement of litigation. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementAmountAwardedToOtherParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LossContingencyInformationAboutLitigationMattersAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_LitigationCaseAxis=rsls_CowenAndCompanyLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |