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Short Term Debt - Short Term Debt - Summary 2 (Details) (USD $) | Dec. 31, 2013 | Dec. 31, 2012
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Debt Disclosure [Abstract] |  |
Interest UBS short-term credit line | $ 22,000 | $ 36,000
Interest RBC short-term margin loan |  | 22,000
Total interest short term margin loans | $ 22,000 | $ 58,000

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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