Related Party Transactions (Narrative) (Details) (Jimmy S.M. Lee, Executive Chairman, USD $) In Thousands, unless otherwise specified	12 Months Ended			9 Months Ended	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Giantec Semiconductor, Inc	Sep. 30, 2012 Giantec Semiconductor, Inc
Related Party Transaction [Line Items]
Revenues from transactions with related party	$ 458	$ 938	$ 585	$ 59	$ 70
Accounts receivable, related parties	30	50		104	12
Ownership percentage in Giantec after sale					19.85%
Purchases with related party				609	108
Accounts payable, related parties				418	26
Licensing fees received from Giantec				$ 66	$ 41