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Short Term Debt Interest (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Interest paid in cash	$ 221,000us-gaap_DebtInstrumentPeriodicPayment	$ 187,000us-gaap_DebtInstrumentPeriodicPayment
Amortization of the RMB Warrants discount	217,000us-gaap_AmortizationOfDebtDiscountPremium	217,000us-gaap_AmortizationOfDebtDiscountPremium
Amortization of RMB deferred financing costs	196,000us-gaap_AmortizationOfDeferredCharges	196,000us-gaap_AmortizationOfDeferredCharges
Total interest expense	651,000us-gaap_InterestExpenseDebt	600,000us-gaap_InterestExpenseDebt
UBS Interest
Interest paid in cash	4,000us-gaap_DebtInstrumentPeriodicPayment / us-gaap_ShortTermDebtTypeAxis = XPL_UBSInterestMember	22,000us-gaap_DebtInstrumentPeriodicPayment / us-gaap_ShortTermDebtTypeAxis = XPL_UBSInterestMember
Amortization of the RMB Warrants discount
Amortization of RMB deferred financing costs
Total interest expense	4,000us-gaap_InterestExpenseDebt / us-gaap_ShortTermDebtTypeAxis = XPL_UBSInterestMember	22,000us-gaap_InterestExpenseDebt / us-gaap_ShortTermDebtTypeAxis = XPL_UBSInterestMember
RMB Interest
Interest paid in cash	217,000us-gaap_DebtInstrumentPeriodicPayment / us-gaap_ShortTermDebtTypeAxis = XPL_RMBInterestMember	165,000us-gaap_DebtInstrumentPeriodicPayment / us-gaap_ShortTermDebtTypeAxis = XPL_RMBInterestMember
Amortization of the RMB Warrants discount	217,000us-gaap_AmortizationOfDebtDiscountPremium / us-gaap_ShortTermDebtTypeAxis = XPL_RMBInterestMember	217,000us-gaap_AmortizationOfDebtDiscountPremium / us-gaap_ShortTermDebtTypeAxis = XPL_RMBInterestMember
Amortization of RMB deferred financing costs	196,000us-gaap_AmortizationOfDeferredCharges / us-gaap_ShortTermDebtTypeAxis = XPL_RMBInterestMember	196,000us-gaap_AmortizationOfDeferredCharges / us-gaap_ShortTermDebtTypeAxis = XPL_RMBInterestMember
Total interest expense	$ 629,000us-gaap_InterestExpenseDebt / us-gaap_ShortTermDebtTypeAxis = XPL_RMBInterestMember	$ 578,000us-gaap_InterestExpenseDebt / us-gaap_ShortTermDebtTypeAxis = XPL_RMBInterestMember

X

- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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The amount of amortization of deferred charges applied against earnings during the period.

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Amount of the required periodic payments including both interest and principal payments.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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