Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 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

	Years ended September 30
	2016			2015			2014
Reinforcement Materials		48	%		54	%		59	%
Performance Chemicals		37	%		33	%		29	%
Purification Solutions		13	%		11	%		9	%
Specialty Fluids		2	%		2	%		3	%