Major Customers and Sales by Country (Tables)

12 Months Ended

Sep. 30, 2019

Geographic Areas Revenues From External Customers [Abstract]

Schedule of Revenues by Geographic Region

Our net revenues for 2019, 2018 and 2017 were to customers in the following geographic regions:

	Years Ended September 30,
	2019			2018			2017
United States		35	%		21	%		22	%
Other		6	%		3	%		3	%
Total Americas		41	%		24	%		25	%
China		18	%		30	%		23	%
Malaysia		5	%		8	%		8	%
Taiwan		10	%		9	%		10	%
Other		8	%		5	%		9	%
Total Asia		41	%		52	%		50	%
Germany		8	%		10	%		9	%
Other		10	%		14	%		16	%
Total Europe		18	%		24	%		25	%
		100	%		100	%		100	%