Note 8 - Homebuilding Indebtedness - Senior Notes Payable (Details) - Homebuilding [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Senior Notes	$ 3,392,208	$ 3,462,016
10.75% Senior Notes Due September 2016 [Member]
Senior Notes	0	275,845
8.4% Senior Notes Due May 2017 [Member]
Senior Notes	235,175	248,975
8.375% Senior Notes Due May 2018 [Member]
Senior Notes	574,501	574,058
1.625% Convertible Senior Notes due May 2018 [Member]
Senior Notes	220,236	301,754
0.25% Convertible Senior Notes Due June 2019 [Member]
Senior Notes	253,777	248,098
6.625% Senior Notes due May 2020 [Member]
Senior Notes	319,909	325,882
8.375% Senior Notes Due January 2021 [Member]
Senior Notes	395,246	394,152
6.25% Senior Notes Due December 15, 2021 [Member]
Senior Notes	297,623	297,148
5.375% Senior Notes Due October 2022 [Member]
Senior Notes	249,230	249,096
5.875% Senior Notes Due November 2024 [Member]
Senior Notes	296,982	296,598
5.25% Senior Notes due June 2026 [Member]
Senior Notes	297,483	0
1.25% Convertible Senior Notes Due August 2032 [Member]
Senior Notes	$ 252,046	$ 250,410