Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Liabilities
Litigation	$ 18,012	$ 16,012
Products and services received but not yet invoiced	17,634	16,055
Other	15,300	13,320
Other Accrued Liabilities	$ 50,946	$ 45,387