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Derivative Instruments - Derivative Instruments Summary RMB Warrants (Details) (RMB Warrant Liability, USD $) | 9 Months Ended
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Sep. 30, 2013
RMB Warrant Liability |
Beginning Balance | $ 1,138,000
(Gain) on Warrant Liability | (953,000)
Ending Balance | $ 185,000

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

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

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