CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED)
Net income (loss)	$ 10,144	$ (11,011)	$ 4,730	$ (5,849)
Other comprehensive income (loss):
Foreign currency translation	(9,118)	(19,094)	(17,621)	(33,057)
Change in net unrealized gains/losses from cash flow hedges:
Change in fair value of cash flow hedges, net of tax	(375)	300	(347)	967
Adjustment for net gains/losses realized and included in net income, net of tax	395	(392)	(574)	(868)
Total change in unrealized gains/losses realized from cash flow hedges, net of tax	20	(92)	(921)	99
Total other comprehensive loss	(9,098)	(19,186)	(18,542)	(32,958)
Total comprehensive income (loss)	$ 1,046	$ (30,197)	$ (13,812)	$ (38,807)