| 
           Property, Buildings and Equipment, Net (Narrative) (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        12 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 
           Sep. 30, 2013 
         | 
        
           Sep. 30, 2012 
         | 
        
           Sep. 30, 2011 
         | 
        
           Sep. 30, 2012
 
          Two Parcels of Land in Polk County, Florida [Member] 
         | 
        
           Jun. 30, 2013
 
          Alachua County Property [Member]
 
          acre 
         | 
        
           Sep. 30, 2013
 
          Hendry County, FL Property [Member]
 
          acre 
         | 
        
           Sep. 30, 2012
 
          Parcels of Land in Lee County, Florida [Member] 
         | 
        
           Sep. 30, 2012
 
          Two Parcels of Land in Polk County, Florida [Member]
 
          properties 
         | 
        
           Sep. 30, 2012
 
          Parcel of Land One [Member]
 
          acre 
         | 
        
           Sep. 30, 2012
 
          Parcel of Land Two [Member]
 
          acre 
         | 
      |
| Long Lived Assets Held-for-sale [Line Items] | ||||||||||
| Number of properties held for sale | 2 | |||||||||
| Impairment on assets held for sale | $ 1,918 | |||||||||
| Acres held for sale | 3,630 | 380 | ||||||||
| Sale price | 10,122 | 9,077 | 1,045 | |||||||
| Fair value of parcels held for sale | 2,475 | |||||||||
| Price per acre | 2,500 | 2,750 | ||||||||
| Cash proceeds from sale of parcels | 9,768 | 8,747 | 1,020 | |||||||
| Proceeds held in escrow | 2,500 | 8,747 | ||||||||
| Significant Acquisitions and Disposals [Line Items] | ||||||||||
| Area of land acquired | 396 | |||||||||
| Purchase price of land | 1,175 | |||||||||
| Area of land | 11,600 | |||||||||
| Proceeds from disposals of property and equipment | 24,381 | 18,095 | 1,221 | 20,678 | ||||||
| Pre-tax gains on sale of properties | $ 20,894 | $ 8,800 | $ 9,113 | $ 20,343 | ||||||