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Inventories (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Nov. 30, 2017 | Nov. 30, 2016 | Nov. 30, 2015
Interest Costs |  |  |  |  |  |
Capitalized interest at beginning of year |  | $ 306,723 | [1] | $ 288,442 | [1] | $ 266,668
Interest incurred | [2] | 177,171 |  | 185,466 |  | 186,885
Interest Expense | [2] | (6,307) |  | (5,900) |  | (21,856)
Interest amortized to construction and land costs | [3] | (215,396) |  | (161,285) |  | (143,255)
Capitalized interest at end of year | [1] | 262,191 |  | 306,723 |  | 288,442
Loss on early extinguishment of debt |  | (5,685) |  | 0 |  | 0
Inventories |  |  |  |  |  |
Homes under construction |  | 1,236,848 |  | 1,245,938 |  |
Land under development |  | 1,651,339 |  | 1,727,657 |  |
Land held for future development or sale | [4] | 375,199 |  | 429,633 |  |
Total |  | 3,263,386 |  | 3,403,228 |  |
Land held for future development | [4] | $ 21,800 |  | 63,400 |  |
Real Estate Held for Sale Duration |  | 1 year |  |  |  |
Land [Member] |  |  |  |  |  |
Interest Costs |  |  |  |  |  |
Interest amortized to construction and land costs |  | $ (4,900) |  | $ (700) |  | $ (16,400)
[1] | Capitalized interest amounts presented in the table reflect the gross amount of capitalized interest, as inventory impairment charges recognized, if any, are not generally allocated to specific components of inventory.
[2] | Interest incurred and interest expensed for the year ended November 30, 2017 included a charge of $5.7 million for the early extinguishment of debt.
[3] | Interest amortized to construction and land costs for the years ended November 30, 2017, 2016 and 2015 included $4.9 million, $.7 million and $16.4 million, respectively, related to land sales during the periods.
[4] | Land held for sale totaled $21.8 million at November 30, 2017 and $63.4 million at November 30, 2016.

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- Definition The net carrying amount as of the balance sheet date of the sum of the various components of an operative builder's inventory, including finished homes. Operative builders primarily consist of entities that develop land, construct residential homes and commercial and industrial buildings thereon, and sell them to home buyers and operators of the commercial and industrial properties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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