Financial Information by Geographic Area (Tables)

12 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Financial Information by Geographic Area

Financial information by geographic area was as follows:

	Year Ended September 30,
	2021		2020		2019
Revenue:
North America	$	405,426	$	399,993	$	372,247
Asia	631,904		546,866		515,833
Europe, Middle East, and Africa	161,861		169,099		149,305
South America	640		312		311
Total	$	1,199,831	$	1,116,270	$	1,037,696
Property, plant and equipment, net1:
North America	$	246,413	$	250,895	$	133,682
Asia	63,242		66,872		68,823
Europe	45,116		44,300		74,313
Total	$	354,771	$	362,067	$	276,818

1.No individual countries other than the U.S. have material Property, plant and equipment

Sales to Customers in Foreign Countries that Accounted for more than 10 Percent of Total Revenue

The following table shows revenue from sales to customers in foreign countries that accounted for more than 10% of our total revenue:

	Year Ended September 30,
	2021		2020		2019
Revenue:
China	$	157,876	$	113,570	*
South Korea	143,737		127,972		135,844
Taiwan	138,852		133,059		125,895

*Not a country with more than 10% revenue.