Consolidated Statement of Shareholders' Equity and Comprehensive Income (Loss) (USD $)	Total	Common Stock	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Balance at Sep. 30, 2008	$ 67,698,529	$ 54,223,669	$ 14,723,541	$ (1,248,681)
Balance, shares at Sep. 30, 2008		11,936,586
Net income (loss)	108,672		108,672
Foreign currency translation adjustment	(1,624,527)			(1,624,527)
Tax effect on unrealized loss on securities	142,587			142,587
Unrealized gain (loss) on available-for-sale securities	(122,551)			(122,551)
Subtotal-comprehensive loss	(1,495,819)
Tax benefit of stock options exercised	562,308	562,308
Stock based compensation	1,330,220	1,330,220
Common stock repurchased	(1,058,041)	(1,058,041)
Common stock repurchased, shares		(110,653)
Stock option exercises	1,782,700	1,782,700
Stock option exercises, shares		364,434
Balance at Sep. 30, 2009	68,819,897	56,840,856	14,832,213	(2,853,172)
Balance, shares at Sep. 30, 2009		12,190,367
Net income (loss)	(253,535)		(253,535)
Foreign currency translation adjustment	(117,457)			(117,457)
Tax effect on unrealized loss on securities	(46,814)			(46,814)
Unrealized gain (loss) on available-for-sale securities	131,685			131,685
Subtotal-comprehensive loss	(286,121)
Tax benefit of stock options exercised	39,970	39,970
Stock based compensation	1,481,102	1,481,102
Common stock repurchased	(1,202,339)	(1,202,339)
Common stock repurchased, shares		(132,915)
Stock option exercises	40,942	40,942
Stock option exercises, shares		15,000
Balance at Sep. 30, 2010	68,893,451	57,200,531	14,578,678	(2,885,758)
Balance, shares at Sep. 30, 2010		12,072,452
Net income (loss)	(1,315,304)		(1,315,304)
Foreign currency translation adjustment	(1,201,334)			(1,201,334)
Tax effect on unrealized loss on securities	17,382			17,382
Unrealized gain (loss) on available-for-sale securities	(46,167)			(46,167)
Subtotal-comprehensive loss	(2,545,423)
Stock based compensation	1,495,773	1,495,773
Common stock repurchased	(2,513,871)	(2,513,871)
Common stock repurchased, shares		(284,585)
Stock option exercises	646,917	646,917
Stock option exercises, shares		353,950
Balance at Sep. 30, 2011	$ 65,976,847	$ 56,829,350	$ 13,263,374	$ (4,115,877)
Balance, shares at Sep. 30, 2011		12,141,817