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Quarterly Results (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2018 | Aug. 31, 2018 | May 31, 2018 | Feb. 28, 2018 | Nov. 30, 2017 | Aug. 31, 2017 | May 31, 2017 | Feb. 28, 2017 | Nov. 30, 2018 | Nov. 30, 2017 | Nov. 30, 2016
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Provisional impact of Tax Refrom |  |  |  | $ 111,200 |  |  |  |  |  |  |
Impact of Tax Reform | $ 1,300 |  |  |  |  |  |  |  | $ 112,458 | $ 0 | $ 0
Revenues | 1,348,609 | $ 1,225,347 | $ 1,101,423 | 871,623 | $ 1,403,138 | $ 1,144,001 | $ 1,002,794 | $ 818,596 | 4,547,002 | 4,368,529 | 3,594,646
Gross profits | 245,931 | 222,893 | 189,222 | 141,192 | 255,442 | 188,110 | 155,382 | 119,697 |  |  |
Inventory Impairments and Land Option Contract Abandonments | 9,069 | 8,414 | 6,526 | 4,985 | 7,110 | 8,113 | 6,001 | 4,008 | 28,994 | 25,232 | 52,812
Pretax income (loss) | 128,936 | 114,676 | 78,308 | 46,045 | 137,346 | 79,208 | 51,982 | 21,459 | 367,965 | 289,995 | 149,315
Net income | $ 96,836 | $ 87,476 | $ 57,308 | $ (71,255) | $ 84,346 | $ 50,208 | $ 31,782 | $ 14,259 | $ 170,365 | $ 180,595 | $ 105,615
Earnings per share: Diluted (usd per share) | $ 0.96 | $ 0.87 | $ 0.57 | $ (0.82) | $ 0.84 | $ 0.51 | $ 0.33 | $ 0.15 | $ 1.71 | $ 1.85 | $ 1.12
Earnings per share: Basic (usd per share) | $ 1.09 | $ 0.99 | $ 0.65 | $ (0.82) | $ 0.97 | $ 0.58 | $ 0.37 | $ 0.17 | $ 1.93 | $ 2.09 | $ 1.23

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