Geographic and Segment Information (Schedule of Revenues, by Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 79,123	$ 76,399
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	9,062	8,628
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	11,912	5,420
Hong Kong
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	15,021	19,617
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	6,073	7,742
Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	3,377	3,279
Taiwan
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	11,003	10,342
Other Asia Pacific countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	6,264	6,808
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	16,066	14,233
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 345	$ 330