XML 83 R41.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Mineral Properties (Details Narrative) (USD $) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 21, 2010 | Jan. 15, 2013
Notes to Financial Statements |  |  |  |  |
Fair value DHI contribution to Mt. Hamilton for 90% interest |  |  |  | $ 3,000,000 |
Fair value Augusta debt |  |  |  | 3,066,000 |
Remaining cash payment to DHI |  | 250,000 |  |  |
Remaining stock payment to DHI |  | 50,000 |  |  |
Advance royalty payments due |  | 300,000 |  |  |
Royalty reduction payment due |  | 500,000 |  |  |
Loaned to DHI for completion of Feasibility Study |  |  | 127,000 |  |
DHI loan repaid |  |  | 131,000 |  |
MHLLC distribution to members |  | 250,000 | 2,500,000 |  |
Solitario portion of MHLLC distribution |  | 200,000 | 2,000,000 |  |
Repayment received from DHI |  |  | 500,000 |  |
Accrued interest due and forgiven |  |  | 35,000 |  |
Accrued interest included in decrease to interest income |  |  | 17,000 |  |
Total decrease to interest income |  |  | 18,000 |  |
Sale of 2.4% net smelter royalty to Sandstorm | 10,000,000 |  |  |  |
Initial payment from Sandstorm for royalty | 6,000,000 |  |  |  |
Balance of royalty payment from Sandstorm |  |  |  |  | 4,000,000
Reduction in mineral property for Sandstorm royalty |  |  | 3,000,000 |  |
Deferred gain recorded as long-term liability on Sandstorm royalty |  |  | 7,000,000 |  |
Option to repurchase royalty for a period of 30 months |  |  | 12,000,000 |  |
Upfront deposit for gold stream agreement with Sandstorm |  |  | 30,000,000 |  |
Shares issued to underlying leaseholders |  | 35,000 |  |  |
Fair value of shares issued to underlying leaseholders |  | 41,000 |  |  |
Amount capitalized for royalty payments to underlying leaseholder |  | 300,000 |  |  |
Joint venture property payment revenue received for Bongara project in excess of capitalized costs |  | 200,000 | 200,000 |  |
Joint venture property revenue Mercurio project |  | 100,000 | 100,000 |  |
Mineral property write-downs in Peru |  | $ 13,000 | $ 31,000 |  |

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_AccruedInterestDueAndForgiven
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_AccruedInterestIncludedInDecreaseToInterestIncome
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_AdvanceRoyaltyPaymentsDue
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_AmountCapitalizedForRoyaltyPaymentsToUnderlyingLeaseholder
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_BalanceRoyaltyPayment
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_DeferredGainRecordedAsLongTermLiability
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_DepositForGoldStreamAgreement
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_DHILoanRepayment
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_EquityIssuedToUnderlyingShareholders
Namespace Prefix: | XPL_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_FairValueAugustaDebt
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_FairValueOfDHIContribution
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_FairValueOfSharesIssuedToUnderlyingShareholders
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_InitialPaymentFromSandstormForRoyalty
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_JointVenturePaymentReceivedForBongara
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_JointVenturePropertyPaymentsMercurio
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_LoanToDHIForFeasibilityStudy
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_MHLLCDistributionToMembers
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_MineralPropertyWriteDownsPeru
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | XPL_NotesToFinancialStatementsAbstract
Namespace Prefix: | XPL_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_OptionToRepurchaseRoyalty
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_PaymentFromDHI
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_ReductionsToMineralPropertyForSandstormRoyalty
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_RemainingCashPaymentToDHI
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_RemainingStockPaymentToDHI
Namespace Prefix: | XPL_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_RoyaltyReductionPaymentDue
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_SaleOfNetSmelterRoyaltyToSandstorm
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_SolitarioPortionMHLLCDistribution
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_TotalDecreaseToInterestIncome
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration