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Note 23 - Unaudited Summarized Consolidated Quarterly Information - Summarized Quarterly Financial Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Oct. 31, 2016
Jul. 31, 2016
Apr. 30, 2016
Jan. 31, 2016
Oct. 31, 2015
Jul. 31, 2015
Apr. 30, 2015
Jan. 31, 2015
Oct. 31, 2016
Oct. 31, 2015
Oct. 31, 2014
Revenues $ 805,069 $ 716,850 $ 654,723 $ 575,605 $ 693,204 $ 540,613 $ 468,949 $ 445,714 $ 2,752,247 $ 2,148,480 $ 2,063,380
Expenses 760,171 711,791 661,312 575,638 653,080 549,089 495,585 464,616 2,742,265 2,174,414 2,049,942
Inventory impairment loss and land option write-offs 10,438 1,565 9,669 11,681 4,426 1,077 4,311 2,230 33,353 12,044 5,224
Loss on extinguishment of debt (3,200)         (3,200) (1,155)
Income (loss) from unconsolidated joint ventures 881 (2,401) (1,346) (1,480) 1,699 (448) 1,466 1,452 (4,346) 4,169 7,897
Income (loss) before income taxes 32,141 1,093 (17,604) (13,194) 37,397 (10,001) (29,481) (19,680) 2,436 (21,765) 20,180
State and federal income tax provision (benefit) 9,852 1,567 (9,143) 2,979 11,878 (2,317) (9,922) (5,304) 5,255 (5,665) (286,964)
Net (loss) income $ 22,289 $ (474) $ (8,461) $ (16,173) $ 25,519 $ (7,684) $ (19,559) $ (14,376) $ (2,819) $ (16,100) $ 307,144
Income (loss) per common share (in dollars per share) $ 0.14 $ 0 $ (0.06) $ (0.11) $ 0.17 $ (0.05) $ (0.13) $ (0.10) $ (0.02) $ (0.11) $ 2.05
Weighted-average number of common shares outstanding (in shares) 147,521,000 147,412,000 147,334,000 147,139,000 147,057,000 147,010,000 146,946,000 146,929,000 147,451 146,899 146,271
Income (loss) per common share (in dollars per share) $ 0.14 $ 0 $ (0.06) $ (0.11) $ 0.16 $ (0.05) $ (0.13) $ (0.10) $ (0.02) $ (0.11) $ 1.87
Weighted-average number of common shares outstanding (in shares) 160,590,000 147,412,000 147,334,000 147,139,000 160,299,000 147,010,000 146,946,000 146,929,000 147,451 146,899 162,441