v3.25.0.1

Leases (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Leases |  |
Schedule of supplemental information related to operating leases | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
Balance Sheet information | ​ | 2024 | ​ | 2023
Operating lease ROU assets | ​ | $ | 177 | ​ | $ | 250
​ | ​ | ​ | ​ | ​ | ​ | ​
Operating lease liabilities, current portion | ​ | $ | 114 | ​ | $ | 111
Operating lease liabilities, long-term portion | ​ | ​ | 77 | ​ | ​ | 151
Total operating lease liabilities | ​ | $ | 191 | ​ | $ | 262
​ | ​ | ​ | ​ | ​ | ​ | ​
Cash flow information for the nine months ended September 30, | ​ | 2024 | ​ | 2023
Cash paid for amounts included in the measurement of operating leases liabilities | ​ | $ | 83 | ​ | $ | 174
| ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
Balance Sheet information |  | 2023 |  | 2022
Operating lease ROU assets | ​ | $ | 250 | ​ | $ | 171
​ | ​ | ​ | ​ | ​ | ​ | ​
Operating lease liabilities, current portion | ​ | $ | 111 | ​ | $ | 171
Operating lease liabilities, long-term portion | ​ | ​ | 151 | ​ | ​ | —
Total operating lease liabilities | ​ | $ | 262 | ​ | $ | 171
Schedule of maturities of operating lease liabilities | ​
​ | ​ | ​ | ​ | ​
2024 (balance of year) | ​ | $ | 28 | ​
2025 | ​ | ​ | 115 | ​
2026 | ​ | ​ | 59 | ​
Total lease payments | ​ | ​ | 202 | ​
Less: imputed interest | ​ | ​ | 11 | ​
Total lease liabilities | ​ | $ | 191 | ​
​ | ​ | ​ | ​ | ​
Weighted-average remaining lease term at end of period (in years) | ​ | ​ | 1.9 | ​
Weighted-average discount rate at end of period | ​ | ​ | 6.9 | %
​ | ​
​ | ​ | ​ | ​ | ​
2024 | ​ | ​ | 111 | ​
2025 | ​ | ​ | 115 | ​
2026 | ​ | ​ | 59 | ​
Total lease payments | ​ | ​ | 285 | ​
Less: imputed interest | ​ | ​ | 23 | ​
Total lease liabilities | ​ | $ | 262 | ​
​ | ​ | ​ | ​ | ​
Weighted-average remaining lease term at end of period (in years) | ​ | ​ | 2.4 | ​
Weighted-average discount rate at end of period | ​ | ​ | 6.9 | %
​

X
- Definition Tabular disclosure of assets and liabilities and cash flow for operating leases of lessee. + References No definition available. + Details
Name: | rsls_ScheduleOfAssetsAndLiabilitiesAndCashFlowLesseeOperatingLeaseTableTextBlock
Namespace Prefix: | rsls_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration