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Short Term Debt - Schedule of Short Term Debt (Details) (USD $)	Sep. 30, 2014
UBS short-term credit line
Beginning balance	$ 802,000
Borrowing	104,000
Repayments	(906,000)
Ending balance

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- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

Name:	XPL_BorrowedUBSShortTermCreditLine
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

Name:	XPL_RepaymentsUBSShortTermCreditLine
Namespace Prefix:	XPL_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Details

Name:	XPL_ShortTermCreditLine
Namespace Prefix:	XPL_
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_UBSShortTermCreditLineBeginningBalance
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_UBSShortTermCreditLineEndingBalance
Namespace Prefix:	XPL_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant