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Short Term Debt - Short Term Debt - For Period (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Debt Disclosure [Abstract]
Interest UBS short-term credit line	$ 4,000	$ 8,000

X

- Details

Name:	us-gaap_DebtDisclosureAbstract
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_InterestUBSShortTermCreditLine
Namespace Prefix:	XPL_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration