CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Net earnings (loss)	$ 410	$ (25,603)	$ 46,879
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(844)	644	(2,018)
Amortization of prior service costs and actuarial gains (losses)	(1,686)	8,078	(4,171)
Change in fair value of interest rate swap			2
Total other comprehensive (loss) income, net of tax	(2,530)	8,722	(6,187)
Comprehensive income (loss)	$ (2,120)	$ (16,881)	$ 40,692