Segment Information (Detail) - Long-lived assets by geographic location - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,980	$ 2,018
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	1,494	1,429
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 486	$ 589