CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED)
Net income	$ 1,735	$ 22,914	$ 69,580
Other comprehensive income (loss):
Adjustment to pension liability, net of tax	(19,584)	(15,791)	(1,085)
Foreign currency translation	(47,872)	(31,430)	(2,017)
Change in unrealized gains/losses from cash flow hedges:
Change in fair value of cash flow hedges, net of tax	464	1,574	748
Adjustment for net gains/losses realized and included in net income, net of tax	(989)	(817)	(215)
Total change in unrealized gains/losses realized from cash flow hedges, net of tax	(525)	757	533
Total other comprehensive loss	(67,981)	(46,464)	(2,569)
Total comprehensive income (loss)	$ (66,246)	$ (23,550)	$ 67,011