CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 9,886	$ 13,302	$ 43,613	$ 34,705
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(228)	3,644	(8,512)	(1,568)
Net unrealized gain/(loss) on cash flow hedges	262	0	(350)	0
Unrealized Gain on Investment	0	0	0	151
Other comprehensive income (loss), net of tax	34	3,644	(8,862)	(1,417)
Comprehensive income	$ 9,920	$ 16,946	$ 34,751	$ 33,288