XML 36 R24.htm IDEA: XBRL DOCUMENT
v3.25.3

Commitments and Contingencies (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2025
Commitments and Contingencies |
Schedule of lease costs | The elements of the Company’s lease costs were as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Nine Months Ended September 30,
​ |  | 2025 |  | 2024
Operating lease cost | ​ | $ | 1,571 | ​ | $ | 4,226
Finance lease cost: | ​ |  |  | ​ |  |
Amortization of lease assets | ​ |  | 439 | ​ |  | 1,321
Interest on lease liabilities | ​ |  | 31 | ​ |  | 192
Total finance lease cost | ​ |  | 470 | ​ |  | 1,513
Variable lease cost | ​ |  | 115 | ​ |  | 768
Short term lease cost | ​ | ​ | — | ​ | ​ | 503
Total lease cost | ​ | $ | 2,156 | ​ | $ | 7,010
Schedule of lease term and discount rate information | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, | ​
​ |  | 2025 |  | 2024 | ​
Weighted-average remaining lease term (in years) |  |  |  |  | ​
Operating leases |  | 3.9 |  | 2.4 | ​
Finance leases |  | — |  | 1.1 | ​
Weighted-average discount rate |  | ​ |  |  | ​
Operating leases |  | 10.5 | % | 9.7 | %
Finance leases |  | — | ​ | 9.0 | %
Schedule of supplemental cash flow information | Supplemental cash flow information was as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Nine Months Ended September 30,
​ |  | 2025 |  | 2024
Cash paid for amounts included in the measurement of lease liabilities: |  | ​ |  |  | ​ |
Operating cash used in operating leases | ​ | $ | 1,541 | ​ | $ | 4,478
Operating cash used in finance leases | ​ | $ | 31 | ​ | $ | 192
Financing cash used in finance leases | ​ | $ | 516 | ​ | $ | 1,158
Schedule of future maturities of lease liabilities | Future maturities of lease liabilities were as follows as of September 30, 2025 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Operating |  | Finance
​ | ​ | Leases | ​ | Leases
Fiscal year ending: |  | ​ |  |  | ​ |
2025 (remaining three months) | ​ | $ | 56 | ​ | $ | —
2026 | ​ |  | 226 | ​ |  | —
2027 | ​ |  | 233 | ​ |  | —
2028 | ​ |  | 240 | ​ |  | —
2029 | ​ |  | 184 | ​ |  | —
Total future minimum payments | ​ |  | 939 | ​ |  | —
Less imputed interest | ​ |  | (177) | ​ |  | —
Present value of lease liabilities | ​ | $ | 762 | ​ | $ | —

X
- Definition The tabular disclosure of ease term and discount rate information relating to operating and finance leases. + References No definition available. + Details
Name: | carm_LesseeOperatingAndFinanceLeaseLeaseTermAndDiscountRateInformationTableTextBlock
Namespace Prefix: | carm_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability and finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References No definition available. + Details
Name: | carm_LesseeOperatingAndFinanceLeaseLiabilityFiscalYearMaturityTableTextBlock
Namespace Prefix: | carm_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The tabular disclosure of supplemental cash flow information relating to operating and finance leases. + References No definition available. + Details
Name: | carm_LesseeOperatingAndFinanceLeaseSupplementalCashFlowInformationTableTextBlock
Namespace Prefix: | carm_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration