SHAREHOLDERS' EQUITY (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Number of Options Outstanding, beginning balance	355,334	459,662	545,010
Number of Options Outstanding, Granted	75,000	0	241,500
Number of Options Outstanting, Canceled	(125)	(4,000)	(129,600)
Number of Options Outstanding, Exercised	(67,000)	(100,328)	(197,248)
Number of Options Outstanding, ending balance	363,209	355,334	459,662
Number of Options Outstanding, Vested or expected to vest	352,231
Number of Options Outstanding, Exercisable	253,430	240,859
Weighted - Average Exercise Price, beginning balance	$ 3.71	$ 3.46	$ 2.89
Weighted-Average Exercise Price, Granted	$ 12.92	$ 0	$ 3.80
Weighted-Average Exercise Price, Canceled	$ 2.79	$ 2.68	$ 3.95
Weighted -Average Exercise Price, Exercised	$ 2.93	$ 2.60	$ 1.97
Weighted - Average Exercise Price, ending balance	$ 5.76	$ 3.71	$ 3.46
Weighted-Average Exercise Price, Vested or expected to vest	$ 5.64
Weighted-Average Exercise Price, Exercisable	$ 4.09	$ 3.59
Outstanding, Weighted-Average Remaining Contractual Life (Years)	4 years 3 months 29 days
Weighted-Average Remaining Contractual Term, Vested or expected to vest	4 years 3 months 14 days
Weighted-Average Remaining Contractual Term, Exercisable	3 years 8 months 12 days	3 years 6 months 22 days
Aggregate Intrinsic Value, ending balance	$ 8,042
Aggregate Intrinsic Value, Vested or expected to vest	7,842
Aggregate Intrinsic Value, Exercisable	$ 6,035	$ 4,017