Other Assets (Schedule of Other Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Sep. 30, 2011
Other Assets [Abstract]
Deposits to foundry for capacity	$ 8,645	$ 10,000
Investment in Giantec	4,025	4,025
Other	5,412	1,396
Other Assets	$ 18,082	$ 15,421	[1]

[1] Derived from audited financial statements.