Annual report pursuant to section 13 and 15(d)

Selected Quarterly Financial Data (unaudited) (Details)

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Selected Quarterly Financial Data (unaudited) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Selected Quarterly Financial Data (unaudited) [Abstract]                      
Total operating revenue $ 6,559 $ 40,420 [1] $ 54,132 $ 26,076 $ 6,206 $ 39,341 $ 36,490 [2] $ 16,555 $ 127,187 $ 98,592 $ 79,792
Total operating expenses 4,671 29,892 [1] 39,859 20,533 5,173 27,502 28,422 [2] 14,062 94,955 75,159 69,869
Gross profit 1,888 10,528 [1] 14,273 5,543 1,033 11,839 8,068 [2] 2,493 32,232 23,433 9,923
Corporate general and administrative 2,739 1,890 [1] 1,842 2,019 2,822 1,766 1,597 [2] 2,011 8,490 8,196 6,458
Other (expense) income (306) 6,888 [1] (502) (360) 348 (331) (2,095) [2] (632) 5,720 (2,710) (5,289)
Income (loss) before income tax expense (benefit) (1,157) 15,526 [1] 11,929 3,164 (1,441) 9,742 4,376 [2] (150) 29,462 12,527 (1,824)
Income tax expense (benefit) (692) 5,919 [1] 4,515 1,231 52 3,771 1,664 [2] (57) 10,973 5,430 (1,201)
Net income (loss) (465) 9,607 [1] 7,414 1,933 (1,493) 5,971 2,712 [2] (93) 18,489 7,097 (623)
Basic and diluted earnings (loss) per share $ (0.06) $ 1.31 [1] $ 1.01 $ 0.26 $ (0.2) $ 0.81 $ 0.37 [2] $ (0.01)      
Recorded cooperative allocated surplus             1,685        
Long Lived Assets Held-for-sale [Line Items]                      
Impairment on assets held for sale                 1,918      
Two Parcels of Land in Polk County, Florida [Member]
                      
Long Lived Assets Held-for-sale [Line Items]                      
Pre-tax gains on sale of properties $ 9,113               $ 9,113    
[1] During the fiscal year 2012, the Company recorded a gain on the sale of the Polk County, Florida properties totaling $9,113,000 and an impairment charge of $1,918,000. Impairment was recorded on assets held for sale on the consolidated balance sheet as of September 30, 2012, which were subsequently sold on October 3, 2012. See Note 7. Property, Buildings and Equipment, Net and Note 18. Subsequent Events.
[2] During the quarter ended March 31, 2011, the Company fully reserved $1,685,000 in allocated surplus that had been recorded based on patronage allocation with Farm Credit which is included in other (expense) income in the table above. See Note 4. Investments, Deposits and Other Assets.