Geographic Information (Tables)

12 Months Ended

Sep. 30, 2019

Segment Reporting [Abstract]

Schedule of Revenues from External Customers by Geographical Areas

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,
	2019		2018		2017
United States	$	406,609	$	335,743	$	279,352
Canada	64,326		42,235		45,540
Middle East and Africa	18,420		38,490		26,639
Far East	11,405		12,976		3,877
Europe	13,746		10,538		21,194
Mexico, Central and South America	2,674		8,734		19,309
Total revenues	$	517,180	$	448,716	$	395,911

Schedule of Long-Lived Assets by Geographical Areas

	September 30,
	2019		2018
Long-lived assets:
United States	$	71,325	$	76,016
Canada	44,933		48,126
United Kingdom	4,554		4,622
Total	$	120,812	$	128,764