Impact from Thailand Flood (Details) (USD $)	12 Months Ended			1 Months Ended				12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Apr. 30, 2013 Natural Disasters and Other Casualty Events	Mar. 31, 2013 Natural Disasters and Other Casualty Events	Dec. 31, 2012 Natural Disasters and Other Casualty Events	Sep. 30, 2012 Natural Disasters and Other Casualty Events	Sep. 30, 2013 Natural Disasters and Other Casualty Events	Sep. 30, 2012 Natural Disasters and Other Casualty Events	Sep. 30, 2011 Natural Disasters and Other Casualty Events
Extraordinary Item [Line Items]
Inventory, Damaged from Thailand Flood Loss (Recovery)									$ 3,700,000
Flood related loss associated with damaged equipment									1,800,000
Flood related loss associated with equipment under capital leases										1,900,000
Loss Contingency, Loss in Period									1,600,000
Property, Plant and Equipment, Additions									5,200,000
Acquisition of equipment under capital lease	0	0	4,411,000					1,200,000	4,400,000
Insurance Recoveries, To Date
Insurance proceeds from flood related loss					14,800,000	4,200,000	4,000,000
Insurance proceeds in the form of capital lease forgiveness				3,400,000		2,200,000
Insurance proceeds in the form of outstanding payable forgiveness				3,200,000		2,000,000
Insurance proceeds receivable					8,200,000
Insurance proceeds from company insurance policy									$ 5,000,000