Note 14 - Senior Notes Payable - Senior Notes Payable (Details) - Homebuilding [Member] - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Senior notes	$ 3,390,504	$ 3,392,208
8.4% Senior Notes Due May 2017 [Member]
Senior notes	231,725	235,175
8.375% Senior Notes Due May 2018 [Member]
Senior notes	574,600	574,501
1.625% Convertible Senior Notes due May 2018 [Member]
Senior notes	221,077	220,236
0.25% Convertible Senior Notes Due June 2019 [Member]
Senior notes	255,196	253,777
6.625% Senior Notes due May 2020 [Member]
Senior notes	318,416	319,909
8.375% Senior Notes Due January 2021 [Member]
Senior notes	395,525	395,246
6.25% Senior Notes Due December 15, 2021 [Member]
Senior notes	297,742	297,623
5.375% Senior Notes Due October 2022 [Member]
Senior notes	249,264	249,230
5.875% Senior Notes Due November 2024 [Member]
Senior notes	297,077	296,982
5.25% Senior Notes due June 2026 [Member]
Senior notes	297,427	297,483
1.25% Convertible Senior Notes Due August 2032 [Member]
Senior notes	$ 252,455	$ 252,046