Other Assets (Schedule of Other Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013		Mar. 31, 2012
Other Assets [Abstract]
Restricted assets	$ 806	$ 811
Other investments	1,584	1,684		2,000
Nanya private placement shares	10,818	10,920
Other	3,011	3,164
Other Assets	$ 16,219	$ 16,579	[1]

[1] Derived from audited financial statements.