CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Net earnings	$ 45,882	$ 42,512	$ 410
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(1,462)	(6,297)	(844)
Amortization of prior service costs and actuarial gains (losses)	(5,250)	(6,961)	(1,686)
Net unrealized gain(loss) on derivative instruments	(33)	(94)	0
Total other comprehensive income (loss), net of tax	(6,745)	(13,352)	(2,530)
Comprehensive income (loss)	$ 39,137	$ 29,160	$ (2,120)