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Note 9 - Disclosures about Fair Value (Details) - Fair Value of Mortgage Loans (Fair Value, Inputs, Level 2 [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Fair Value, Inputs, Level 2 [Member]
    
Note 9 - Disclosures about Fair Value (Details) - Fair Value of Mortgage Loans [Line Items]    
Mortgage loans held for sale $ 176,511us-gaap_MortgagesHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 $ 124,184us-gaap_MortgagesHeldForSaleFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member