Geographic Information (Tables)

12 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Schedule of Revenues from External Customers by Geographical Areas

All revenues represent sales to unaffiliated customers and are summarized for the last three fiscal years by region in the table below:

	Year Ended September 30,
	2014		2013		2012
United States	$	365,085	$	374,453	$	388,977
Canada		137,684		113,391		92,656
Middle East and Africa		84,330		61,618		79,778
Europe (including former Soviet Union)		34,920		24,092		24,857
Far East		15,127		35,388		12,418
Mexico, Central and South America		10,668		31,925		92,055
Total revenues	$	647,814	$	640,867	$	690,741

Schedule of Long-Lived Assets by Geographical Areas

	September 30,
	2014		2013
Long-lived assets:
United States	$	99,711	$	96,824
Canada		51,493		41,777
United Kingdom		5,692		5,894
Total	$	156,896	$	144,495