Annual report pursuant to Section 13 and 15(d)

Major Customers and Foreign Sales (Details)

v3.5.0.2
Major Customers and Foreign Sales (Details) - Customer
12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2014
Revenue, Major Customer [Line Items]      
Revenue, number of major customers 1 2 2
Revenues, percentage 100.00% 100.00% 100.00%
Total Americas      
Revenue, Major Customer [Line Items]      
Revenues, percentage 20.00% 26.00% 21.00%
United States      
Revenue, Major Customer [Line Items]      
Revenues, percentage 17.00% 24.00% 21.00%
Other      
Revenue, Major Customer [Line Items]      
Revenues, percentage 3.00% 2.00% 0.00%
Total Asia      
Revenue, Major Customer [Line Items]      
Revenues, percentage 68.00% 60.00% 45.00%
Taiwan      
Revenue, Major Customer [Line Items]      
Revenues, percentage 15.00% 13.00% 16.00%
Malaysia      
Revenue, Major Customer [Line Items]      
Revenues, percentage 18.00% 13.00% 3.00%
China      
Revenue, Major Customer [Line Items]      
Revenues, percentage 28.00% 26.00% 14.00%
Other      
Revenue, Major Customer [Line Items]      
Revenues, percentage 7.00% 8.00% 12.00%
Total Europe      
Revenue, Major Customer [Line Items]      
Revenues, percentage 12.00% 14.00% 34.00%
Germany      
Revenue, Major Customer [Line Items]      
Revenues, percentage 3.00% 5.00% 16.00%
Other      
Revenue, Major Customer [Line Items]      
Revenues, percentage 9.00% 9.00% 18.00%
Customer Number One      
Revenue, Major Customer [Line Items]      
Revenue, major customer, percentage 11.00% 15.00% 18.00%
Customer Number Two      
Revenue, Major Customer [Line Items]      
Revenue, major customer, percentage   11.00% 11.00%