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Employee Stock Compensation Plans - Employee Stock - Current Year Stock Option Activity (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013
2013 Plan |
Outstanding, beginning of year |
Weighted Average Exercise Price (Cdn$), beginning of year |
Granted | 1,400,000
Granted Weighted Average Exercise Price (Cdn$) | 0.96
Cancelled |
Cancelled Weighted Average Exercise Price (Cdn$) |
Forfeited |
Forfeited Weighted Average Exercise Price (Cdn$) |
Outstanding, end of year | 1,400,000
Weighted Average Exercise Price (Cdn$), end of year | 0.96
Aggregate Intrinsic Value, end of year (1) |
Exercisable, end of year | 350,000
Exercisable, end of year, Weighted Average Exercise Price (Cdn$) | 0.96
Aggregate Intrinsic Value, exercisable (1) |

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | XPL_AggregateIntrinsicValueEndOfYear2013Plan
Namespace Prefix: | XPL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
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X
- Definition No authoritative reference available. + References No definition available. + Details
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Namespace Prefix: | XPL_
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X
- Definition No authoritative reference available. + References No definition available. + Details
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Namespace Prefix: | XPL_
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X
- Definition No authoritative reference available. + References No definition available. + Details
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Namespace Prefix: | XPL_
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Balance Type: | na
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X
- Definition No authoritative reference available. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
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Namespace Prefix: | XPL_
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- Definition No authoritative reference available. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Details
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Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
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Namespace Prefix: | XPL_
Data Type: | xbrli:pureItemType
Balance Type: | na
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X
- Definition No authoritative reference available. + References No definition available. + Details
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- Definition No authoritative reference available. + References No definition available. + Details
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- Definition No authoritative reference available. + References No definition available. + Details
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X
- Definition No authoritative reference available. + References No definition available. + Details
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Data Type: | xbrli:pureItemType
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X
- Definition No authoritative reference available. + References No definition available. + Details
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