Geographic and Segment Information (Schedule of Revenues, by Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 80,910	$ 79,123
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	10,893	9,062
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	9,872	11,912
Hong Kong
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	13,840	15,021
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	5,657	6,073
Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	3,919	3,377
Taiwan
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	11,397	11,003
Other Asia Pacific countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	5,969	6,264
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	19,096	16,066
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 267	$ 345