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v2.4.0.6

Summary of Significant Accounting Policies (Details 2) (Minimum) | 12 Months Ended
--- | ---
Dec. 31, 2012 Y
Minimum |
Period for receivables to be collected which are not significant (in years) | 1

X
- Definition Represents the period beyond which the receivables to be collected related to contracts accounted for under the percentage of completion method, are not significant. + References No definition available. + Details
Name: | spw_PeriodForReceivablesToBeCollected
Namespace Prefix: | spw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration