SHARE-BASED COMPENSATION (Stock Option Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Sep. 30, 2012 Y	Sep. 30, 2011 Y
Number of Options:
Outstanding at October 1, 2011	1,480
Granted	320
Exercised	(285)
Forfeited	(65)
Outstanding at September 30, 2012	1,450
Exercisable at September 30, 2012	855
Weighted Average Exercise Price:
Outstanding at October 1, 2011	$ 25.44
Granted	$ 41.60
Exercised	$ 19.39
Forfeited	$ 36.60
Outstanding at September 30, 2012	$ 29.74
Exercisable at September 30, 2012	$ 23.95
Wtd. Avg. Remaining Contractual Life (Years), Outstanding	6.1	0.0
Wtd. Avg. Remaining Contractual Life (Years), Exercisable at September 30, 2012	4.5
Aggregate Intrinsic Value, Outstanding at October 1, 2011	$ 0
Aggregate Intrinsic Value , Exercised	7,944
Aggregate Intrinsic Value, Outstanding at September 30, 2012	22,663
Aggregate Intrinsic Value, Exercisable at September 30, 2012	$ 18,378

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

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