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Summary of Significant Accounting Policies Pensions (Details) (USD $) | 12 Months Ended
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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 |  |

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- Definition Amount of contributions made to multiemployer plans by the employer. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450691-114947 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450657-114947 + Details
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