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Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2012
Supplemental disclosure of non-cash activity: |  |  |
Decrease in obligations related to land not owned under option agreements | $ (1,717) | $ (154) | $ (602)
Decrease in future land purchase rights | 0 | 0 | (11,651)
Contribution of future land purchase rights to unconsolidated entities | 0 | 0 | 11,651
Decrease in debt related to conversion of Mandatory Convertible Subordinated Notes and Tangible Equity Units for common stock | (2,376) | (9,402) | (55,308)
Contribution of Pre-Owned net assets for investment in unconsolidated entity | 0 | 0 | (19,670)
Sale of interest in REIT for shares of AMH | 26,040 | 0 | 0
Purchase of AMH shares in exchange for interest in REIT | (26,040) | 0 | 0
Non-cash land acquisitions | 20,274 | 11,000 | 7,813
Issuance of stock under deferred bonus stock plans | 103 | 68 | 0
Supplemental disclosure of cash activity: |  |  |
Interest payments | 117,501 | 102,716 | 126,313
Income tax payments | 212 | 403 | 831
Tax refunds received | $ 33,271 | $ 6,730 | $ 2,568

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