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Commitments and Contingencies (Details) - USD ($) $ in Thousands | 12 Months Ended
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Nov. 30, 2017 | Nov. 30, 2016 | Nov. 30, 2015
Changes in the Company's warranty liability |  |  |  |
Balance at beginning of year |  | $ 56,682 | $ 49,085 | $ 45,196
Warranties issued |  | 38,452 | 30,135 | 23,018
Payments | [1] | (25,336) | (23,190) | (26,367)
Adjustments | [2] | 0 | 652 | 7,238
Balance at end of year |  | 69,798 | 56,682 | 49,085
Self Insurance Reserve, Balance at beginning of year |  | 158,584 | 173,011 | 205,228
Expenses Associated with Self Insurance | [3] | 20,371 | 24,808 | 18,590
Payments, Net of Recoveries for Self Insurance |  | (9,720) | (28,395) | (21,201)
Self Insurance Reserve, Balance at end of year |  | 177,695 | 158,584 | 173,011
Self Insurance [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Increase (Decrease) in Insurance Liabilities | [4] | $ 8,460 | $ (10,840) | $ (29,606)
[1] | Payments for 2016 and 2015 included $2.3 million and $8.4 million, respectively, to repair homes affected by water intrusion-related issues in certain of our communities in central and southwest Florida.
[2] | Adjustments for 2016 and 2015 included the reclassification of certain estimated minimum probable recoveries to receivables in connection with the above-noted water intrusion-related issues. The adjustments for each year had no impact on our consolidated statements of operations.
[3] | These expenses are included in selling, general and administrative expenses and are largely offset by contributions from independent subcontractors participating in the wrap-up policy
[4] | The amount for each period reflects changes in our self-insurance liability that were offset by changes in the receivable for estimated probable insurance and other recoveries to present our self-insurance liability on a gross basis. The amount for 2017 also includes a $21.7 million change in estimate to increase our self-insurance liability to reflect claim frequency and severity trends, which indicated that probable future payments for claims relating to homes delivered in certain prior years were likely to exceed the previously estimated liabilities remaining for those claims. Therefore, we recorded an adjustment in the 2017 third quarter to increase our self-insurance liability, based on an actuarially determined estimate, to an amount expected to have a higher probability of being adequate to cover future payments associated with unresolved claims, including claims incurred but not yet reported. This adjustment is included in selling, general and administrative expenses.

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- Definition The increase (decrease) in insurance liability balances during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition Amount of increase (decrease) in the standard and extended product warranty accrual from changes in estimates attributable to preexisting product warranties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(4)) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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- Definition Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property. + 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 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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