INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Components of income (loss) before income taxes
United States	$ (18,712)	$ (22,788)	$ (31,640)
Foreign	90,623	112,199	71,411
Income before income taxes	71,911	89,411	39,771
Current:
Federal	(2,433)	(8,049)	8,198
State	723	918	2,437
Foreign	20,266	25,705	18,581
Total current	18,556	18,574	29,216
Deferred:
Federal	24,112	1,296	(14,182)
State	5,710	(1,232)	(2,720)
Foreign	619	1,193	2,188
Total deferred	30,441	1,257	(14,714)
Provision for income taxes	$ 48,997	$ 19,831	$ 14,502