Annual report pursuant to section 13 and 15(d)

Income Taxes (Schedule of Computation of Provision for Income Taxes (Benefit)) (Details)

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Income Taxes (Schedule of Computation of Provision for Income Taxes (Benefit)) (Details) (USD $)
In Thousands, 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
Income Taxes [Abstract]                      
Tax at the statutory federal rate                 $ 10,312 $ 4,259 $ (620)
State income taxes, net of federal benefit                 1,051 460 (66)
Nontaxable interest and dividends                       (37)
Federal impacts from IRS exam and tax return amendments                 (444) 713 404
Deferred rate adjustment                 (313)      
Change in valuation allowance                       (569)
Permanent and other reconciling items, net                 367 (2) (313)
Total provision (benefit) for income taxes $ (692) $ 5,919 [1] $ 4,515 $ 1,231 $ 52 $ 3,771 $ 1,664 [2] $ (57) $ 10,973 $ 5,430 $ (1,201)
[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.