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Note 15 - Mortgage Credit Facilities (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Note 15 - Mortgage Credit Facilities (Details) [Line Items]    
Restricted Cash and Cash Equivalents $ 40,500,000us-gaap_RestrictedCashAndCashEquivalents  
Financial Services [Member]    
Note 15 - Mortgage Credit Facilities (Details) [Line Items]    
Warehouse Agreement Borrowings 91,537,000us-gaap_WarehouseAgreementBorrowings
/ us-gaap_StatementBusinessSegmentsAxis
= spf_FinancialServicesMember		 89,413,000us-gaap_WarehouseAgreementBorrowings
/ us-gaap_StatementBusinessSegmentsAxis
= spf_FinancialServicesMember
Restricted Cash and Cash Equivalents 1,295,000us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_StatementBusinessSegmentsAxis
= spf_FinancialServicesMember		 1,295,000us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_StatementBusinessSegmentsAxis
= spf_FinancialServicesMember
First Lender [Member] | Repurchase Facility [Member]    
Note 15 - Mortgage Credit Facilities (Details) [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity 125,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= spf_RepurchaseFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= spf_FirstLenderMember		  
Second Lender [Member] | Repurchase Facility [Member]    
Note 15 - Mortgage Credit Facilities (Details) [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 75,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= spf_RepurchaseFacilityMember
/ us-gaap_LineOfCreditFacilityAxis
= spf_SecondLenderMember