Geographic and Segment Information (Schedule of Long-Lived Assets, by Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 50,977	$ 46,504
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	10,377	9,696
Hong Kong
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	7	7
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	3,765	3,424
Taiwan
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 36,828	$ 33,377