Statements of Stockholders' Equity and Other Comprehensive Income (Loss) (USD $)	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Balance at Sep. 30, 2008	$ 185,960,000	$ 2,598,000	$ 87,051,000	$ 0	$ 96,311,000
Balance, shares at Sep. 30, 2008		7,794,744
Net (loss) income	10,222,000				10,222,000
Other comprehensive income (loss) net of tax:
Unrealized holding gains arising during the period	31,000			31,000
Income tax (expense) benefit				(13,000)
Other comprehensive income (loss)	18,000			18,000
Comprehensive income (loss) for the period	10,240,000
Excess tax benefit of employee stock plan	5,000		5,000
Stock-based compensation expense	1,667,000		1,667,000
Issuance of common stock as compensation	91,000	2,000	89,000
Issuance of common stock as compensation, shares		5,000
Exercise of stock options	416,000	8,000	408,000
Exercise of stock options, shares		23,250
Balance at Sep. 30, 2009	198,379,000	2,608,000	89,220,000	18,000	106,533,000
Balance, shares at Sep. 30, 2009		7,822,994
Net (loss) income	(9,352,000)				(9,352,000)
Other comprehensive income (loss) net of tax:
Realization of losses on investment				(28,000)
Unrealized holding gains arising during the period	3,000			3,000
Income tax (expense) benefit				11,000
Other comprehensive income (loss)	(14,000)			(14,000)
Comprehensive income (loss) for the period	(9,366,000)
Stock-based compensation expense	1,398,000		1,398,000
Issuance of common stock as compensation	185,000	3,000	182,000
Issuance of common stock as compensation, shares		8,340
Exercise of stock options	4,000		4,000
Exercise of stock options, shares		250
Issuance of restricted stock awards and unearned compensation		28,000	(28,000)
Issuance of restricted stock awards and unearned compensation, shares		84,100
Shares exchanged for taxes on stock-based compensation	(375,000)	(5,000)	(370,000)
Shares exchanged for taxes on stock-based compensation, shares		(13,578)
Balance at Sep. 30, 2010	190,225,000	2,634,000	90,406,000	4,000	97,181,000
Balance, shares at Sep. 30, 2010		7,902,106
Net (loss) income	(3,246,000)				(3,246,000)
Other comprehensive income (loss) net of tax:
Realization of losses on investment				(6,000)
Income tax (expense) benefit				2,000
Other comprehensive income (loss)	(4,000)			(4,000)
Comprehensive income (loss) for the period	(3,250,000)
Tax deficit resulting from share-based compensation	(453,000)		(453,000)
Stock-based compensation expense	1,485,000		1,485,000
Issuance of common stock as compensation	186,000	2,000	184,000
Issuance of common stock as compensation, shares		6,479
Exercise of stock options	297,000	5,000	292,000
Exercise of stock options, shares		15,700
Shares exchanged for taxes on stock-based compensation	(326,000)	(3,000)	(323,000)
Shares exchanged for taxes on stock-based compensation, shares		(9,400)
Forfeiture of restricted stock awards	(1,000)	(1,000)
Forfeiture of restricted stock awards, shares		(4,000)
Balance at Sep. 30, 2011	$ 188,163,000	$ 2,637,000	$ 91,591,000	$ 0	$ 93,935,000
Balance, shares at Sep. 30, 2011		7,910,885