Statements of Stockholders' Equity (USD $)	Total	Class A voting Common Stock	Capital in Excess of Par Value	Deferred Directors Compensation	Retained Earnings	Treasury Stock
Balances at Sep. 30, 2009	$ 64,122,343	$ 140,524	$ 1,922,053	$ 1,862,499	$ 64,507,547	$ (4,310,280)
Balances, shares at Sep. 30, 2009		8,431,502				(119,866)
Purchase of treasury stock	(291,383)					(291,383)
Purchase of treasury stock, shares						(12,326)
Issuance of treasury shares to ESOP	287,194		(117,716)			404,910
Issuance of treasury shares to ESOP, shares						11,632
Restricted stock awards	12,028		12,028
Common shares to be issued to directors for services	359,628			359,628
Dividends declared ($.28 per share)	(2,327,504)				(2,327,504)
Net income	11,419,690				11,419,690
Balances at Sep. 30, 2010	73,581,996	140,524	1,816,365	2,222,127	73,599,733	(4,196,753)
Balances, shares at Sep. 30, 2010		8,431,502				(120,560)
Purchase of treasury stock	(1,851,290)					(1,851,290)
Purchase of treasury stock, shares						(65,481)
Issuance of treasury shares to ESOP	303,843		(44,340)			348,183
Issuance of treasury shares to ESOP, shares						10,710
Restricted stock awards	152,482		152,482
Common shares to be issued to directors for services	443,456			443,456
Dividends declared ($.28 per share)	(2,322,082)				(2,322,082)
Net income	8,493,912				8,493,912
Balances at Sep. 30, 2011	78,802,317	140,524	1,924,507	2,665,583	79,771,563	(5,699,860)
Balances, shares at Sep. 30, 2011		8,431,502				(175,331)
Purchase of treasury stock	(1,158,957)					(1,158,957)
Purchase of treasury stock, shares						(38,771)
Issuance of treasury shares to ESOP	326,942		(14,391)			341,333
Issuance of treasury shares to ESOP, shares						10,660
Restricted stock awards	330,923		330,923
Distribution of deferred directors' compensation	83,742		(220,810)	(406,770)		711,322
Distribution of deferred directors' compensation, shares						22,132
Common shares to be issued to directors for services	417,347			417,347
Dividends declared ($.28 per share)	(2,321,164)				(2,321,164)
Net income	7,370,996				7,370,996
Balances at Sep. 30, 2012	$ 83,852,146	$ 140,524	$ 2,020,229	$ 2,676,160	$ 84,821,395	$ (5,806,162)
Balances, shares at Sep. 30, 2012		8,431,502				(181,310)