Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Retained Earnings [Member]	Other Comprehensive Loss [Member]
Beginning balance at Sep. 30, 2011	$ 24,840	$ 9,567	$ 15,462	$ (189)
Beginning balance, Shares at Sep. 30, 2011		5,741,451
Net income	971		971
Dividends paid	(685)		(685)
Unrealized gain on investment in available for sale security	81			81
Director stock options exercised	15	15
Director stock options exercised, shares	5,000	5,000
Employee and director restricted stock vested, Shares		22,103
Employee restricted stock forfeited	(1)	(1)
Repurchase of vested employee restricted stock for tax withholding	(24)	(24)
Repurchase of vested employee restricted stock for tax withholding, Shares		(8,697)
Deferred restricted stock unit compensation	52	52
Tax effect of restricted stock unit vesting	(25)	(25)
Ending balance at Sep. 30, 2012	25,224	9,584	15,748	(108)
Ending balance, shares at Sep. 30, 2012		5,759,857
Net income	4,820		4,820
Dividends paid	(729)		(729)
Reclassification from sale of investment in available for sale security	108			108
Director stock options exercised	911	911
Director stock options exercised, shares	247,440	247,440
Repurchase of employee and director stock options to pay for option exercise	(671)	(671)
Repurchase of employee and director stock options to pay for option exercise, Shares		(95,802)
Repurchase of employee stock to pay for option exercise	(181)	(181)
Repurchase of employee stock to pay for option exercise, Shares		(24,866)
Employee and director restricted stock vested
Employee and director restricted stock vested, Shares		12,350
Repurchase of vested employee restricted stock for tax withholding	(1)	(1)
Repurchase of vested employee restricted stock for tax withholding, Shares		(223)
Deferred restricted stock unit compensation	8	8
Tax effect of restricted stock unit vesting	298	298
Ending balance at Sep. 30, 2013	$ 29,787	$ 9,948	$ 19,839
Ending balance, shares at Sep. 30, 2013		5,898,756