XML 61 R42.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Long Term Debt - Long Term Debt Interest Accretion Augusta Debt (Details) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Debt Disclosure [Abstract] |  |  |  |
Interest accretion on Augusta debt | $ 29 | $ 41 | $ 110 | $ 143

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

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