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Note 16 - Disclosures About Fair Value - Carrying Values and Estimated Fair Value of Other Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Financial Services [Member]    
Mortgage loans held for investment, net $ 25,613 $ 24,924
Homebuilding [Member]    
Fair value of mortgage loans held for investment, net 3,735,232 3,392,208
Fair Value, Inputs, Level 2 [Member] | Financial Services [Member]    
Mortgage loans held for investment, net 25,613 24,924
Fair value of mortgage loans held for investment, net 25,613 24,924
Fair Value, Inputs, Level 2 [Member] | Homebuilding [Member]    
Senior and convertible senior notes payable, net 3,735,232 3,392,208
Senior and convertible senior notes payable, net $ 4,014,703 $ 3,617,838