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Significant Accounting Policies (Tables) | 6 Months Ended
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Mar. 31, 2016
Accounting Policies [Abstract] |
Segment Reporting Revenue Percentage | The following table shows the relative size of the revenue recognized in each of the Company’s reportable segments.
| Three Months Ended |  | Six Months Ended |
| March 31, |  | March 31, |
| 2016 |  |  | 2015 |  | 2016 |  |  | 2015 |
Reinforcement Materials |  |  | 48 | % |  |  |  | 53 | % |  |  | 49 | % |  |  |  | 56 | %
Performance Chemicals |  |  | 39 | % |  |  |  | 35 | % |  |  | 38 | % |  |  |  | 32 | %
Purification Solutions |  |  | 12 | % |  |  |  | 11 | % |  |  | 12 | % |  |  |  | 10 | %
Specialty Fluids |  |  | 1 | % |  |  |  | 1 | % |  |  | 1 | % |  |  |  | 2 | %

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- References No definition available. + Details
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