SHAREHOLDERS' EQUITY (Details Textual) (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	75,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 7.61		$ 2.37
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 1,039,000	$ 778,000
Proceeds from Stock Options Exercised	198,000	261,000	388,000
Deferred Tax Expense from Stock Options Exercised	61,000	691,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	559,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 7 months 17 days
Share Based Compensation Arrangement By Share Based Payment Award Estimated Forfeiture Rate	10.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,575,686
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	145,889
Stock Issued During Period Shares Restricted Stock Award Unvested	1,056,696
Restricted Stock Unit Vesting Rate	33.33%
Stock Issued During Period Value Restricted Stock Award Price Per Share	$ 18.40	$ 10.61	$ 4.18
Stock Issued During Period, Value, Restricted Stock Award, Gross	14,602,000	3,100,000	1,200,000
Number Of Restricted Stock Units Fulfill The Condition	653,126
Restricted Stock Units (RSUs) [Member]
Recognition Period For Restricted Stock Expense	2 years 3 months 29 days
Restricted Stock or Unit Expense	3,085,000	709,000	147,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	$ 16,020,000