CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED)
Net income (loss)	$ 461	$ 10,144	$ (2,407)	$ 4,730
Other comprehensive income (loss):
Foreign currency translation	7,214	(9,118)	(13,304)	(17,621)
Change in unrealized gains/losses from cash flow hedges:
Change in fair value of cash flow hedges, net of tax	(244)	(375)	222	(347)
Adjustment for net gains/losses realized and included in net income, net of tax	(326)	395	(1,191)	(574)
Total change in unrealized gains/losses realized from cash flow hedges, net of tax	(570)	20	(969)	(921)
Total other comprehensive income (loss)	6,644	(9,098)	(14,273)	(18,542)
Total comprehensive income (loss)	$ 7,105	$ 1,046	$ (16,680)	$ (13,812)