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Note 11 - Income Taxes (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Note 11 - Income Taxes (Details) [Line Items]      
Deferred Tax Assets, Gross $ 278,963,000us-gaap_DeferredTaxAssetsGross $ 379,991,000us-gaap_DeferredTaxAssetsGross  
Deferred Tax Assets, Valuation Allowance 2,561,000us-gaap_DeferredTaxAssetsValuationAllowance 4,591,000us-gaap_DeferredTaxAssetsValuationAllowance  
Income Tax Expense (Benefit) 134,099,000us-gaap_IncomeTaxExpenseBenefit 68,983,000us-gaap_IncomeTaxExpenseBenefit (453,234,000)us-gaap_IncomeTaxExpenseBenefit
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest 349,964,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest 257,698,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest 78,187,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate    
Unrecognized Tax Benefits 2,536,000us-gaap_UnrecognizedTaxBenefits 472,000us-gaap_UnrecognizedTaxBenefits 13,484,000us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 1,600,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 300,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued    
State and Local Jurisdiction [Member]      
Note 11 - Income Taxes (Details) [Line Items]      
Deferred Tax Assets, Valuation Allowance 2,600,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember		 4,600,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember		  
Gross Annual Deduction Limitation on Net Operating Loss Carryforwards 15,600,000spf_GrossAnnualDeductionLimitationOnNetOperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember		    
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration 743,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember		    
Domestic Tax Authority [Member]      
Note 11 - Income Taxes (Details) [Line Items]      
Gross Annual Deduction Limitation on Net Operating Loss Carryforwards 15,600,000spf_GrossAnnualDeductionLimitationOnNetOperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_DomesticCountryMember		    
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration 294,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_DomesticCountryMember		    
State and Local Net Operating Loss Carryforwards Limited to Shorter Carryforward Periods [Member]      
Note 11 - Income Taxes (Details) [Line Items]      
Deferred Tax Assets, Gross 279,000,000us-gaap_DeferredTaxAssetsGross
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_StateandLocalNetOperatingLossCarryforwardsLimitedtoShorterCarryforwardPeriodsMember		 380,000,000us-gaap_DeferredTaxAssetsGross
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_StateandLocalNetOperatingLossCarryforwardsLimitedtoShorterCarryforwardPeriodsMember		  
Subject to Federal and State Net Operating Loss Carryforward Limitations [Member]      
Note 11 - Income Taxes (Details) [Line Items]      
Deferred Tax Assets, Operating Loss Carryforwards 119,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_SubjectToFederalAndStateNetOperatingLossCarryforwardLimitationsMember		 125,500,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_SubjectToFederalAndStateNetOperatingLossCarryforwardLimitationsMember		  
Deferred Tax Assets, Operating Loss Carryforwards, Domestic, Before Tax 294,200,000spf_DeferredTaxAssetsOperatingLossCarryforwardsDomesticBeforeTax
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_SubjectToFederalAndStateNetOperatingLossCarryforwardLimitationsMember		 310,000,000spf_DeferredTaxAssetsOperatingLossCarryforwardsDomesticBeforeTax
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_SubjectToFederalAndStateNetOperatingLossCarryforwardLimitationsMember		  
Deferred Tax Assets, Operating Loss Carryforwards, State and Local, Before Tax 278,700,000spf_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocalBeforeTax
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_SubjectToFederalAndStateNetOperatingLossCarryforwardLimitationsMember		 297,000,000spf_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocalBeforeTax
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_SubjectToFederalAndStateNetOperatingLossCarryforwardLimitationsMember		  
Not Limited by Section 382 [Member]      
Note 11 - Income Taxes (Details) [Line Items]      
Deferred Tax Assets, Operating Loss Carryforwards 24,700,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_NotLimitedBySection382Member		 84,700,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_NotLimitedBySection382Member		  
Deferred Tax Assets, Operating Loss Carryforwards, Domestic, Before Tax   165,000,000spf_DeferredTaxAssetsOperatingLossCarryforwardsDomesticBeforeTax
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_NotLimitedBySection382Member		  
Deferred Tax Assets, Operating Loss Carryforwards, State and Local, Before Tax   $ 598,000,000spf_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocalBeforeTax
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= spf_NotLimitedBySection382Member