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Note 23 - Unaudited Summarized Consolidated Quarterly Information - Summarized Quarterly Financial Information (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Oct. 31, 2017
Jul. 31, 2017
Apr. 30, 2017
Jan. 31, 2017
Oct. 31, 2016
Jul. 31, 2016
Apr. 30, 2016
Jan. 31, 2016
Oct. 31, 2017
Oct. 31, 2016
Oct. 31, 2015
Revenues $ 721,686 $ 592,035 $ 585,935 $ 552,009 $ 805,069 $ 716,850 $ 654,723 $ 575,605 $ 2,451,665 $ 2,752,247 $ 2,148,480
Expenses 703,964 591,872 586,877 554,482 760,171 711,791 661,312 575,638 2,455,008 2,742,265 2,174,414
Inventory impairment loss and land option write-offs 8,479 4,197 1,953 3,184 10,438 1,565 9,669 11,681 17,813 33,353 12,044
(Loss) gain on extinguishment of debt (42,258) (242) 7,646 3,200 (34,854) (3,200)
Income (loss) from unconsolidated joint ventures 3,062 (3,881) (4,562) (1,666) 881 (2,401) (1,346) (1,480) (7,047) (4,346) 4,169
Income (loss) before income taxes 12,305 (50,173) (7,699) 323 32,141 1,093 (17,604) (13,194) (45,244) 2,436 (21,765)
State and federal income tax provision (benefit) 464 287,036 (1,017) 466 9,852 1,567 (9,143) 2,979 286,949 5,255 (5,665)
Net income (loss) $ 11,841 $ (337,209) $ (6,682) $ (143) $ 22,289 $ (474) $ (8,461) $ (16,173) $ (332,193) $ (2,819) $ (16,100)
Income (loss) per common share (in dollars per share) $ 0.08 $ (2.28) $ (0.05) $ 0 $ 0.14 $ 0 $ (0.06) $ (0.11) $ (2.25) $ (0.02) $ (0.11)
Weighted-average number of common shares outstanding (in shares) 147,905 147,748 147,558 147,535 147,521 147,412 147,334 147,139 147,703 147,451 146,899
Income (loss) per common share (in dollars per share) $ 0.08 $ (2.28) $ (0.05) $ 0 $ 0.14 $ 0 $ (0.06) $ (0.11) $ (2.25) $ (0.02) $ (0.11)
Weighted-average number of common shares outstanding (in shares) 160,548 147,748 147,558 147,535 160,590 147,412 147,334 147,139 147,703 147,451 146,899