Major Customers and Sales by Country (Tables)

12 Months Ended

Sep. 30, 2021

Geographic Areas Revenues From External Customers [Abstract]

Schedule of Revenues by Geographic Region

Our net revenues for 2021, 2020 and 2019 were to customers in the following geographic regions:

	Years Ended September 30,
	2021			2020			2019
United States		22	%		28	%		35	%
Other		5	%		7	%		6	%
Total Americas		27	%		35	%		41	%
China		29	%		25	%		18	%
Malaysia		3	%		5	%		5	%
Taiwan		15	%		15	%		10	%
Other		11	%		7	%		8	%
Total Asia		58	%		52	%		41	%
Germany		5	%		3	%		8	%
Other		10	%		10	%		10	%
Total Europe		15	%		13	%		18	%
		100	%		100	%		100	%