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Summary of Significant Accounting Policies Pensions (Details) Companies in Thousands, $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 30, 2013 | Jun. 30, 2015 | Sep. 30, 2015 USD ($) Employees Companies | Sep. 30, 2014 USD ($) | Sep. 30, 2013 USD ($)
Multiemployer Plan Percentage Decrease in Pension Rights | 6.30% |  |  |  |
Multiemployer Plan, Period Contributions |  |  | $ 963 | $ 1,087 | $ 1,042
Pensioenfonds Metaal en Techniek |  |  |  |  |
Multiemployer Plans Contribution Rate (less than 5%) |  |  | 5.00% |  |
Multiemployer Plan, Coverage Ratio Of Plan Assets To Obligations |  | 103.00% | 95.30% |  |
Multiemployer Plan Premium Percentage | 16.60% |  |  |  |
Multiemployer Plan Number Of Companies Covered | Companies |  |  | 33 |  |
Multiemployer Plan Number Of Employees | Employees |  |  | 1,200,000 |  |
Multiemployer Plan, Period Contributions |  |  | $ 805 | 929 | 879
Multiemployer Plans Plan Assets as of September 30, 2014 |  |  | 66,300,000 |  |
Multiemployer Plans Present Value Of Accumulated Plan Benefits as of September 30, 2014 |  |  | 69,600,000 |  |
Other Plans |  |  |  |  |
Multiemployer Plan, Period Contributions |  |  | $ 158 | $ 158 | $ 163
Minimum | Pensioenfonds Metaal en Techniek |  |  |  |  |
Multiemployer Plan, Coverage Ratio Of Plan Assets To Obligations |  |  | 105.00% |  |
The Netherlands | Pensioenfonds Metaal en Techniek |  |  |  |  |
Multiemployer Plan Number Of Employees | Employees |  |  | 120 |  |

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