Geographical Information

6 Months Ended

Mar. 31, 2018

We evaluate our reportable segment pursuant to ASC 280, Segment Reporting. The Company's Chief Executive Officer is the chief operating decision maker and he assesses the performance of the operating segment and allocates resources to the segment based on its business prospects, competitive factors, net revenue, operating results, and other non-U.S. GAAP financial ratios. Based on this evaluation, the Company operates as a single reportable segment.

Revenue: The following tables set forth revenue by geographic region with revenue assigned to geographic regions based on our customers’ billing address.



Revenue by Geographic Region	For the three months ended March 31,				For the six months ended March 31,
(in thousands)	2018		2017		2018		2017
United States	$	14,940	$	25,930	$	35,019	$	50,684
Asia	2,146		4,772		4,803		8,491
Europe	1,505		1,695		2,732		3,325
Other	32		194		105		267
Total revenue	$	18,623	$	32,591	$	42,659	$	62,767

Significant Customers: Significant customers are defined as customers representing greater than 10% of our consolidated revenue. Revenue from three of our significant customers represented an aggregate of 65% and 74% of our consolidated revenue for the three months ended March 31, 2018 and 2017, respectively. Revenue from two and three of our significant customers represented an aggregate of 59% and 74% of our consolidated revenue for the six months ended March 31, 2018 and 2017, respectively.

Long-lived Assets: Long-lived assets consist of property, plant, and equipment. As of March 31, 2018 and September 30, 2017, approximately 46% of our long-lived assets were located in the United States. The remaining long-lived assets are primarily located in China.