CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ (2,011)	$ 461	$ (11,797)	$ (2,407)
Other comprehensive income (loss):
Foreign currency translation	3,544	7,214	3,352	(13,304)
Change in unrealized gains/losses from cash flow hedges:
Change in fair value of cash flow hedges, net of tax	(790)	(244)	(763)	222
Adjustment for net gains/losses realized and included in net income, net of tax	95	(326)	599	(1,191)
Total change in unrealized gains/losses realized from cash flow hedges, net of tax	(695)	(570)	(164)	(969)
Total other comprehensive income (loss)	2,849	6,644	3,188	(14,273)
Total comprehensive income (loss)	$ 838	$ 7,105	$ (8,609)	$ (16,680)