Other Assets (Schedule of Other Assets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Other Assets [Abstract]
Restricted assets	$ 811	$ 239
Deposits to foundry for capacity	0	3,500
Investment in Giantec	0	4,025
Other investment	1,684	2,000
Nanya common stock	0	14,752
Nanya private placement shares	10,920	11,042
Other	3,164	3,319
Other assets	$ 16,579	$ 38,877