CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net income (loss)		$ (13,332)	$ (3,238)	$ 44,647	$ 64,029
Other comprehensive income:
Unrealized gain on pension plan obligation	[1]	532	647	1,598	1,943
Tax effect of unrealized gain on pension plan		(215)	(267)	(647)	(802)
Total other comprehensive income		317	380	951	1,141
Total comprehensive income (loss)		$ (13,015)	$ (2,858)	$ 45,598	$ 65,170

[1] This item is included in the computation of net periodic pension cost.