| 
           Long-Term Debt (Narrative) (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        1 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 6 Months Ended | 12 Months Ended | 1 Months Ended | 0 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
           Mar. 31, 2014 
         | 
        
           Sep. 30, 2013 
         | 
        
           Mar. 31, 2014
 
          Revolving Line of Credit and Term Note [Member] 
         | 
        
           Feb. 28, 2014
 
          Revolving Line of Credit [Member] 
         | 
        
           Mar. 31, 2014
 
          Revolving Line of Credit [Member] 
         | 
        
           Sep. 30, 2013
 
          Revolving Line of Credit [Member] 
         | 
        
           Mar. 31, 2014
 
          Revolving Line of Credit [Member]
 
          Minimum [Member] 
         | 
        
           Mar. 31, 2014
 
          Revolving Line of Credit [Member]
 
          Maximum [Member] 
         | 
        
           Mar. 31, 2014
 
          Revolving Line of Credit [Member]
 
          Property [Member]
 
          acre 
         | 
        
           Mar. 31, 2014
 
          Term Loan [Member] 
         | 
        
           Sep. 30, 2013
 
          Term Loan [Member] 
         | 
        
           Oct. 01, 2015
 
          Term Loan [Member]
 
          Maximum [Member]
 
          Scenario, Forecast [Member] 
         | 
        
           Mar. 31, 2014
 
          Term Loan [Member]
 
          Property [Member]
 
          acre 
         | 
        
           Mar. 31, 2014
 
          Term Loan [Member]
 
          Producing Citrus Groves [Member]
 
          acre 
         | 
        
           Oct. 10, 2012
 
          Mortgage Note Payable [Member]
 
          sqft 
         | 
      |
| Debt Instrument [Line Items] | |||||||||||||||
| Principal balance outstanding | $ 35,000 | $ 36,000 | $ 35,000 | $ 36,000 | |||||||||||
| Acres collateralized | 43,991 | 12,280 | 8,600 | ||||||||||||
| Amount of credit facility | 95,000 | 60,000 | |||||||||||||
| Annual commitment fee | 0.15% | ||||||||||||||
| Amount of commitment fees | 83 | ||||||||||||||
| Commitment fee payable | 15 | ||||||||||||||
| LIBOR spread | 2.25% | 2.25% | 2.50% | 2.50% | 5.00% | ||||||||||
| Periodic principal payment | 500 | ||||||||||||||
| Scheduled maturity date | Oct. 01, 2020 | Oct. 01, 2020 | Oct. 01, 2020 | Oct. 01, 2020 | |||||||||||
| Minimum number of days notice required for rate change | 30 days | ||||||||||||||
| Amount of debt extinguished | 1,794 | ||||||||||||||
| Prepayment penalty | $ 66 | ||||||||||||||
| Acres of collateral released in extinguishment | 7,680 | ||||||||||||||