Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt and Lines of Credit - Debt Refinancing (Details)

v3.7.0.1
Long-Term Debt and Lines of Credit - Debt Refinancing (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 03, 2014
USD ($)
Mar. 31, 2017
USD ($)
a
Mar. 31, 2016
USD ($)
Mar. 31, 2017
USD ($)
a
Sep. 30, 2017
USD ($)
Dec. 01, 2016
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Debt Instrument [Line Items]                
Interest rate term loans   $ 191,838,000   $ 191,838,000     $ 197,219,000  
Minimum debt service coverage ratio 1.10              
Tangible net worth $ 160,000,000              
Percentage of consolidated net income 10.00%              
Minimum current ratio 1.50              
Debt to total assets ratio 0.625              
Limit on capital expenditures $ 30,000,000              
Advances   $ 53,499,000 $ 50,132,000          
Silver Nip Citrus                
Debt Instrument [Line Items]                
Minimum current ratio   1.5   1.5        
Farm and Ranch Land                
Debt Instrument [Line Items]                
Area of land (in acres) | a   5,762   5,762        
Citrus Groves                
Debt Instrument [Line Items]                
Area of land (in acres) | a   38,200   38,200        
Loans Payable | Silver Nip Citrus                
Debt Instrument [Line Items]                
Interest rate term loans     7,000,000          
Limited guaranty and security agreement     $ 7,000,000     $ 8,000,000 $ 8,000,000  
RLOC                
Debt Instrument [Line Items]                
Revolving line of credit $ 25,000,000              
Availability under line of credit   $ 25,000,000   $ 25,000,000        
RLOC | 90 Day LIBOR                
Debt Instrument [Line Items]                
LIBOR spread 1.50%              
RLOC | LIBOR                
Debt Instrument [Line Items]                
Annual commitment fee (as a percent) 0.25%              
WCLC                
Debt Instrument [Line Items]                
Revolving line of credit $ 70,000,000              
Variable interest rate (as a percentage)   2.53%   2.53%     2.27%  
Availability under line of credit   $ 48,300,000   $ 48,300,000        
WCLC | Letter of Credit                
Debt Instrument [Line Items]                
Revolving line of credit $ 20,000,000              
Outstanding balance   11,417,000   11,417,000        
Outstanding letters of credit   10,300,000   $ 10,300,000        
WCLC | One Month LIBOR                
Debt Instrument [Line Items]                
LIBOR spread       1.75%        
WCLC | One Month LIBOR | Minimum                
Debt Instrument [Line Items]                
LIBOR spread 1.75%              
Annual commitment fee (as a percent) 0.20%              
WCLC | One Month LIBOR | Maximum                
Debt Instrument [Line Items]                
LIBOR spread 2.50%              
Annual commitment fee (as a percent) 0.30%              
Metlife Term Loan | Citree                
Debt Instrument [Line Items]                
Revolving line of credit   5,000,000   $ 5,000,000        
Interest rate       5.28%        
Fixed Interest Rate Term Loans                
Debt Instrument [Line Items]                
Interest rate term loans $ 125,000,000 102,188,000   $ 102,188,000     $ 105,312,000  
Quarterly principal payments $ 2,281,250              
Fixed interest rate (as a percentage) 4.15%              
Prepayment amount of the fixed term loan $ 8,750,000             $ 0
Fixed Interest Rate Term Loans | Silver Nip Citrus                
Debt Instrument [Line Items]                
Interest rate term loans   $ 27,550,000   27,550,000        
Quarterly principal payments       $ 290,000        
Fixed interest rate (as a percentage)   5.35%   5.35%        
Prepayment amount of the fixed term loan   $ 5,000,000   $ 5,000,000        
Variable Interest Rate Term Loans                
Debt Instrument [Line Items]                
Interest rate term loans $ 57,500,000 $ 51,030,000   $ 51,030,000     $ 52,469,000  
LIBOR spread subject to adjustment period 2 years              
Variable interest rate (as a percentage)   2.54%   2.54%     2.25%  
Variable Interest Rate Term Loans | 90 Day LIBOR                
Debt Instrument [Line Items]                
LIBOR spread 1.50%              
Scenario, Forecast                
Debt Instrument [Line Items]                
Annual increase of tangible net worth         $ 162,300,000