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Property, Buildings and Equipment, Net (Narrative) (Details) (USD $) | 12 Months Ended |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2012 | Jun. 30, 2014 Polk County Real Estate Parcel [Member] acre | Jun. 30, 2013 Alachua County Property [Member] acre | Sep. 30, 2014 Hendry County, FL Property [Member] acre | Sep. 30, 2013 Hendry County, FL Property [Member] acre
Long Lived Assets Held-for-sale [Line Items] |  |  |  |  |  |  |
Impairment on assets held for sale |  |  | $ 1,918,000 |  |  |  |
Fair value of parcels held for sale | 56,681,000 |  |  |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |
Area of land acquired |  |  |  |  | 396 |  |
Acres held for sale |  |  |  | 2,800 |  |  |
Sales price |  |  |  | 5,623,000 | 1,175,000 |  |
Area of land |  |  |  |  |  | 11,600 | 11,600
Proceeds from disposals of property and equipment | 14,473,000 | 24,381,000 | 18,095,000 |  |  | 20,678,000 |
Pre-tax gains on sale of properties | $ 4,369,000 | $ 20,894,000 | $ 8,800,000 |  |  | $ 20,343,000 | $ 20,343,000

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