Geographic Information (Tables)

12 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

Schedule of Revenues from External Customers by Region

Revenues by country represent sales to unaffiliated customers as determined by the ultimate destination of our products and services, summarized for the last three fiscal years by region in the table below (in thousands):

	Year Ended September 30,
	2020		2019		2018
United States	$	397,983	$	406,609	$	335,743
Canada	66,064		64,326		42,235
Middle East and Africa	18,162		18,420		38,490
Far East	18,079		11,405		12,976
Europe	15,866		13,746		10,538
Mexico, Central and South America	2,345		2,674		8,734
Total revenues	$	518,499	$	517,180	$	448,716

Schedule of Long-Lived Assets by Region

Long-lived assets by country consist of property, plant and equipment, net of accumulated depreciation and are determined based on the location of the tangible assets, summarized for the last two fiscal years in the table below (in thousands):

	September 30,
	2020		2019
Long-lived assets:
United States	$	67,071	$	71,325
Canada	42,580		44,933
United Kingdom	4,721		4,554
Total	$	114,372	$	120,812