INCOME TAXES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Current:
Federal									$ 8,198	$ 15,448	$ (804)
State									2,437	1,927	810
Foreign									18,581	21,005	24,531
Total current									29,216	38,380	24,537
Deferred:
Federal									(14,182)	331	9,356
State									(2,720)	328	299
Foreign									2,188	1,293	(73)
Total deferred provision (benefit)									(14,714)	1,952	9,582
Total income tax expense	$ (5,935)	$ 7,292	$ 7,276	$ 5,869	$ 8,951	$ 11,667	$ 10,758	$ 8,956	$ 14,502	$ 40,332	$ 34,119