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Contingencies - Warranty (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) home Community | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) home
Loss Contingencies [Line Items] |  |  |  |  |  |
Standard product warranty length, minimum |  |  | 1 year |  |  |
Standard product warranty length, maximum |  |  | 2 years |  |  |
Limited product warranty length |  |  | 5 years |  |  |
Movement in Standard Product Warranty Accrual [Roll Forward] |  |  |  |  |  |
Balance at beginning of period | $ 28,794,000 | $ 12,561,000 | $ 16,084,000 | $ 11,663,000 | $ 13,781,000 | $ 11,663,000
Accruals for warranties issued | 2,935,000 | 1,517,000 | 6,090,000 | 3,687,000 |  |
Changes in liability related to warranties existing in prior periods | 7,058,000 | 2,459,000 | 27,813,000 | 5,682,000 |  |
Payments made (b) | (7,963,000) | (2,756,000) | (19,163,000) | (7,251,000) |  |
Balance at end of period | 30,824,000 | $ 13,781,000 | 30,824,000 | $ 13,781,000 | 30,824,000 | 16,084,000
Insurance Recoveries | 7,300,000 |  | 13,000,000 |  |  |
Specific Warranty Issue |  |  |  |  |  |
Movement in Standard Product Warranty Accrual [Roll Forward] |  |  |  |  |  |
Product warranty expense |  |  |  |  | 28,900,000 |
FLORIDA |  |  |  |  |  |
Movement in Standard Product Warranty Accrual [Roll Forward] |  |  |  |  |  |
Balance at beginning of period |  |  | $ 4,000,000 |  |  |
Balance at end of period |  |  |  |  |  | $ 4,000,000
Homes likely to require more than minor repairs | home |  |  | 486 |  |  | 135
Product warranty accrual, warranties issued |  |  |  |  |  | $ 4,300,000
Homes repaired during period | home |  |  | 116 |  |  | 11
Product warranty accrual, payments | (4,500,000) |  | $ (9,200,000) |  |  | $ (300,000)
Number of homes requiring more than minor repairs accounted for in warranty liability | home |  |  |  |  |  | 124
Insurance Recoveries | 6,100,000 |  | 10,400,000 |  |  |
FLORIDA | Specific Warranty Issue |  |  |  |  |  |
Movement in Standard Product Warranty Accrual [Roll Forward] |  |  |  |  |  |
Product warranty expense | $ 6,100,000 |  | $ 24,000,000 |  | 28,300,000 |
NEW JERSEY | Specific Warranty Issue |  |  |  |  |  |
Movement in Standard Product Warranty Accrual [Roll Forward] |  |  |  |  |  |
Standard product warranty |  |  | 8 years |  |  |
Product warranty expense |  |  |  |  | $ 600,000 |
Number of Communities With Water Intrusion Issues |  |  | 1 |  | 1 |

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