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v2.4.0.6

Use Of Estimates (Details 2) | 12 Months Ended
--- | ---
Dec. 31, 2012
Employee Benefit Plans |
Amortization period of plan assets | 5 years

X
- Definition For defined benefit plans, this element represents the amortization period of plan assets. + References No definition available. + Details
Name: | spw_DefinedBenefitPlanAmortizationPeriodOfPlantAssets
Namespace Prefix: | spw_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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