Restatement of Previously Issued Consolidated Financial Statements (Details 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Consolidated Statements of Cash Flows
Net income	$ 33,878	$ 33,267	$ 80,393	$ 96,988
Depreciation of property, plant and equipment			64,339	44,076
Inventory reserves			5,590	3,681
Deferred income taxes			(13,710)	(4,184)
Inventories			15,267	(130,953)
Other assets			11,868	$ (1,033)
As Reported
Consolidated Statements of Cash Flows
Net income	$ 37,262		88,708
Depreciation of property, plant and equipment			57,800
Inventory reserves			8,485
Deferred income taxes			(8,527)
Inventories			8,665
Other assets			$ 8,616