Geographical Information

9 Months Ended

Jun. 30, 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 June 30,				For the nine months ended June 30,
(in thousands)	2018		2017		2018		2017
United States	$	12,965	$	23,391	$	47,984	$	74,075
Asia	3,116		5,699		7,919		14,190
Europe	1,534		1,653		4,266		4,978
Other	102		209		207		476
Total revenue	$	17,717	$	30,952	$	60,376	$	93,719

Significant Customers: Significant customers are defined as customers representing greater than 10% of our consolidated revenue. Revenue from two of our significant customers represented an aggregate of 56% of our consolidated revenue for each of the three months ended June 30, 2018 and 2017. Revenue from two and three of our significant customers represented an aggregate of 58% and 71% of our consolidated revenue for the nine months ended June 30, 2018 and 2017, respectively.

Long-lived Assets: Long-lived assets consist of property, plant, and equipment. As of June 30, 2018 and September 30, 2017, approximately 43% and 46%,respectively, of our long-lived assets were located in the United States. The remaining long-lived assets are primarily located in China.