Significant Accounting Policies (Tables)

6 Months Ended

Mar. 31, 2017

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,
	2017			2016			2017				2016
Reinforcement Materials		54	%		48	%			52	%		49	%
Performance Chemicals		35	%		39	%			35	%		38	%
Purification Solutions		10	%		12	%			11	%		12	%
Specialty Fluids		1	%		1	%			2	%		1	%