Note 13 - Senior Notes Payable (Details) - Senior Notes Payable (Parentheticals)	Sep. 30, 2014 Homebuilding [Member] 6.25% Senior Notes due April 2014 [Member]	Dec. 31, 2013 Homebuilding [Member] 6.25% Senior Notes due April 2014 [Member]	Sep. 30, 2014 Homebuilding [Member] 7% Senior Notes due August 2015 [Member]	Dec. 31, 2013 Homebuilding [Member] 7% Senior Notes due August 2015 [Member]	Sep. 30, 2014 Homebuilding [Member] 10.75% Senior Notes due September 2016 [Member]	Dec. 31, 2013 Homebuilding [Member] 10.75% Senior Notes due September 2016 [Member]	Sep. 30, 2014 Homebuilding [Member] 8.375% Senior Notes due May 2018 [Member]	Dec. 31, 2013 Homebuilding [Member] 8.375% Senior Notes due May 2018 [Member]	Sep. 30, 2014 Homebuilding [Member] 8.375% Senior Notes due January 2021 [Member]	Dec. 31, 2013 Homebuilding [Member] 8.375% Senior Notes due January 2021 [Member]	Sep. 30, 2014 Homebuilding [Member] 6.25% Senior Notes due December 15, 2021 [Member]	Dec. 31, 2013 Homebuilding [Member] 6.25% Senior Notes due December 15, 2021 [Member]	Sep. 30, 2014 Homebuilding [Member] 1.25% Convertible Senior Notes Due August 2032 [Member]	Dec. 31, 2013 Homebuilding [Member] 1.25% Convertible Senior Notes Due August 2032 [Member]	Apr. 30, 2014 6.25% Senior Notes due April 2014 [Member]	Sep. 30, 2014 10.75% Senior Notes due September 2016 [Member]	Sep. 30, 2014 1.25% Convertible Senior Notes Due August 2032 [Member]	Sep. 30, 2013 1.25% Convertible Senior Notes Due August 2032 [Member]
Note 13 - Senior Notes Payable (Details) - Senior Notes Payable (Parentheticals) [Line Items]
Senior notes, interest rate	6.25%	6.25%	7.00%	7.00%	10.75%	10.75%	8.375%	8.375%	8.375%	8.375%	6.25%	6.25%	1.25%	1.25%	6.25%	10.75%	1.25%	1.25%