Summary of Significant Accounting Policies Pensions (Details) (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Multiemployer Plan, Period Contributions	$ 1,202,000	$ 1,105,000	$ 697,000
Pensioenfonds Metaal en Techniek [Member]
Multiemployer Plans Contribution Rate	5.00%
Multiemployer Plan, Coverage Ratio Of Plan Assets To Obligations	91.00%
Multiemployer Plan Premium Percentage	16.00%
Multiemployer Plan Number Of Companies Covered	34,000
Multiemployer Plan Number Of Employees	1,200,000
Multiemployer Plan, Period Contributions	1,021,000	913,000	548,000
Multiemployer Plans Plan Assets October 31, 2012	58,200,000,000
Multiemployer Plans Present Value Of Accumulated Plan Benefits October 31, 2012	64,100,000,000
Other Plans [Member]
Multiemployer Plan, Period Contributions	$ 181,000	$ 192,000	$ 149,000
Minimum | Pensioenfonds Metaal en Techniek [Member]
Multiemployer Plan, Coverage Ratio Of Plan Assets To Obligations	104.30%
Multiemployer Plan Coverage Ratio Of Plan Assets To Obligations By December 31, 2012	100.00%
The Netherlands [Member] | Pensioenfonds Metaal en Techniek [Member]
Multiemployer Plan Number Of Employees	170