v3.25.4

Marketable Equity Securities (Details Narrative) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Proceeds from sale of common stock | $ 5,141,000 | $ 1,218,000
Vox Royalty Corp. [Member] |  |
Common stock shares sold | 84,055 |
Proceeds from sale of common stock | $ 307,000 |
Gain on sale of common stock | $ 126,000 |
Solitario [Member] |  |
Common stock shares sold | 100,000 | 100,000
Proceeds from sale of common stock | $ 1,401,000 | $ 54,000
Gain on sale of common stock | 1,319,000 | $ 54,000
Cash settlement | 403,000 |
Net proceeds after fees and commissions | $ 998,000 |

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of shares of stock issued attributable to transactions classified as other. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | xpl_CashSettlementAmount
Namespace Prefix: | xpl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | xpl_GainLossOnSaleOfCommonStock
Namespace Prefix: | xpl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | xpl_NetProceedsAfterFeesAndCommissions
Namespace Prefix: | xpl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=xpl_VoxRoyaltyCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=xpl_SolitarioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |