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Note 11 - Disclosures About Fair Value - Carrying Values and Estimated Fair Value of Other Financial Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Financial Services [Member]    
Mortgage loans held for investment, net $ 24,924 $ 22,704
Homebuilding [Member]    
Senior notes payable 3,392,208 3,462,016
Fair Value, Inputs, Level 2 [Member] | Financial Services [Member]    
Mortgage loans held for investment, net 24,924 22,704
Senior notes payable 24,924 22,704
Fair Value, Inputs, Level 2 [Member] | Homebuilding [Member]    
Senior and convertible senior notes payable, net 3,392,208 3,462,016
Senior and convertible senior notes payable, net $ 3,617,838 $ 3,675,276