Geographic and Segment Information (Schedule of Long-Lived Assets, by Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 36,595	$ 29,286
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	7,050	440
Hong Kong
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	8	7
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	705	558
Taiwan
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 28,832	$ 28,281