Geographic Information (Tables)

12 Months Ended

Sep. 30, 2021

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,
	2021		2020		2019
United States	$	351,422	$	397,983	$	406,609
Canada	68,655		66,064		64,326
Middle East and Africa	26,615		18,162		18,420
Asia/Pacific	8,889		18,079		11,405
Europe	13,027		15,866		13,746
Mexico, Central and South America	1,951		2,345		2,674
Total revenues	$	470,559	$	518,499	$	517,180

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,
	2021		2020
Long-lived assets:
United States	$	62,308	$	67,071
Canada	42,375		42,580
United Kingdom	4,774		4,721
Total	$	109,457	$	114,372