Geographic Sales and Significant Customers (Tables)

6 Months Ended

Mar. 31, 2017

Segment Reporting [Abstract]

Schedule of Revenues by Geographic Region

The following presents revenues by geographic region (in thousands):

	Three months ended March 31,				Six months ended March 31,
	2017		2016		2017		2016
Americas:
United States	$	265,418	$	242,084	$	521,668	$	481,274
Other	26,427		29,795		56,880		57,739
Total Americas	291,845		271,879		578,548		539,013
EMEA	126,287		121,881		256,201		249,869
Japan	24,513		24,659		49,287		47,311
Asia Pacific	75,603		65,258		150,170		136,970
	$	518,248	$	483,677	$	1,034,206	$	973,163

Schedule of Revenue by Major Customers by Reporting Segments

The following distributors of the Company's products accounted for more than 10% of total net revenue:

	Three months ended March 31,				Six months ended March 31,
	2017		2016		2017		2016
Westcon Group, Inc.	17.9	%	18.2	%	18.4	%	19.0	%
Ingram Micro, Inc.	16.3	%	15.0	%	16.2	%	14.8	%
Tech Data 1	12.6	%	13.3	%	12.5	%	13.6	%
Arrow ECS 2	10.5	%	—		10.7	%	10.3	%
1. On February 27, 2017, Tech Data completed the acquisition of Avnet Technology Solutions
2. Arrow ECS accounted for under 10% of total net revenue for the three months ended March 31, 2016

Long-lived Assets by Geographic Areas [Table Text Block]

The Company tracks assets by physical location. Long-lived assets consist of property and equipment, net, and are shown below (in thousands):

	March 31, 2017		September 30, 2016
United States	$	108,030	$	105,480
EMEA	14,652		13,789
Other countries	4,023		3,979
	$	126,705	$	123,248