XML 83 R44.htm IDEA: XBRL DOCUMENT
v3.25.1

General and Administrative Expenses (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
General and Administrative Expenses |
Schedule of General and Administrative Expenses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the year ended |  | For the year ended
​ | ​ | December 31, | ​ | December 31,
​ | ​ | 2024 | ​ | 2023
Professional and consulting fees(1) | ​ | $ | 8,532 | ​ | $ | 6,584
Investor relations |  | ​ | 1,547 |  | ​ | 1,547
Office and sundry |  | ​ | 3,047 |  | ​ | 3,503
Salaries and wages |  | ​ | 5,813 |  | ​ | 4,995
Director fees |  | ​ | 814 |  | ​ | 774
Share-based compensation |  | ​ | 9,793 |  | ​ | 4,122
Transfer agent and filing fees |  | ​ | 321 |  | ​ | 363
Travel expenses |  | ​ | 494 |  | ​ | 609
Other expenses |  | ​ | 283 |  | ​ | 43
General and Administrative Expenses | ​ | $ | 30,644 | ​ | $ | 22,540
(1)Professional and consulting fees include $1.2 million of expenses settled with RSUs in 2024 (2023: $0.4 million).

X
- Definition Schedule of General and Administrative Expenses [Table Text Block] Yes textBlockItemType duration false true The tabular disclosure of General and Administrative Expenses. + References No definition available. + Details
Name: | tmc_ScheduleOfGeneralAndAdministrativeExpensesTableTextBlock
Namespace Prefix: | tmc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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