Geographical Information (Tables)

12 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Schedule of Revenue by Geographic Region

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 Fiscal Years ended September 30,
(in thousands)	2018		2017		2016
United States	$	69,543	$	98,520	$	66,436
Asia	10,386		16,713		17,401
Europe	5,422		7,015		7,618
Other	266		647		543
Total revenue	$	85,617	$	122,895	$	91,998