Segment Data and Related Information (Schedule of Revenue by Geographic Region) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Revenue	$ 33,473	$ 41,062	$ 125,056	$ 116,293
United States
Segment Reporting Information [Line Items]
Revenue	21,674	30,249	84,665	79,466
Asia
Segment Reporting Information [Line Items]
Revenue	10,012	7,413	27,737	17,898
Europe
Segment Reporting Information [Line Items]
Revenue	1,605	1,333	11,710	4,877
Other
Segment Reporting Information [Line Items]
Revenue	$ 182	$ 2,067	$ 944	$ 14,052