Major Customers and Foreign Sales (Details) - Customer	9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Revenue, Major Customer [Line Items]
Revenue, number of major customers	1	2
Revenues, percentage	100.00%	100.00%
United States
Revenue, Major Customer [Line Items]
Revenues, percentage	20.00%	25.00%
Other
Revenue, Major Customer [Line Items]
Revenues, percentage	2.00%	2.00%
Total North America
Revenue, Major Customer [Line Items]
Revenues, percentage	22.00%	27.00%
China
Revenue, Major Customer [Line Items]
Revenues, percentage	24.00%	26.00%
Malaysia
Revenue, Major Customer [Line Items]
Revenues, percentage	22.00%	10.00%
Taiwan
Revenue, Major Customer [Line Items]
Revenues, percentage	13.00%	15.00%
Other
Revenue, Major Customer [Line Items]
Revenues, percentage	6.00%	8.00%
Total Asia
Revenue, Major Customer [Line Items]
Revenues, percentage	65.00%	59.00%
Germany
Revenue, Major Customer [Line Items]
Revenues, percentage	2.00%	5.00%
Germany
Revenue, Major Customer [Line Items]
Revenues, percentage	11.00%	9.00%
Total Europe
Revenue, Major Customer [Line Items]
Revenues, percentage	13.00%	14.00%
Net Revenues | Customer Concentration Risk | Customer Number One
Revenue, Major Customer [Line Items]
Concentration risk, percentage	14.00%	18.00%
Net Revenues | Customer Concentration Risk | Customer Number Two
Revenue, Major Customer [Line Items]
Concentration risk, percentage		12.00%