Accrued Liabilities (Accrued Liabilities) (Details) (USD $) In Thousands	Jun. 30, 2011	Sep. 30, 2010
Accrued Liabilities
Salaries and other member benefits	$ 57,300	$ 43,598
Current portion of restructuring and other charges	2,740	4,862
Warranties	14,522	10,851
Interest payable	5,689	11,925
Accrued retirement benefits	2,735	2,748
Deferred revenues	7,242	12,376
Taxes, other than income	1,956	4,618
Other	17,542	18,074
Accrued liabilities	$ 109,726	$ 109,052