Quarterly report pursuant to Section 13 or 15(d)

Major Customers and Foreign Sales - Schedule of Revenues by Geographic Region (Details)

v3.19.3.a.u2
Major Customers and Foreign Sales - Schedule of Revenues by Geographic Region (Details) - Net Revenues - Geographic Concentration Risk
3 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 100.00% 100.00%
United States    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 33.00% 26.00%
Other North America    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 9.00% 1.00%
Total North America    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 42.00% 27.00%
China    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 23.00% 23.00%
Malaysia    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 2.00% 3.00%
Taiwan    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 13.00% 8.00%
Other Asia    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 6.00% 8.00%
Total Asia    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 44.00% 42.00%
Germany    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 3.00% 20.00%
Other Europe    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 11.00% 11.00%
Total Europe    
Revenue, Major Customer [Line Items]    
Concentration risk, percentage 14.00% 31.00%