Segmental Reporting (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Segment	Sep. 30, 2011
Summary of Segment depreciation and amortization
Depreciation	$ 1.6	$ 2.4	$ 4.9	$ 7.2
Amortization	1.1	1.1	3.1	3.4
Segmental Reporting (Textual) [Abstract]
Number of segments			3
Fuel Specialties [Member]
Summary of Segment depreciation and amortization
Depreciation	0.4	0.6	1.4	1.8
Amortization	0.6	0.5	1.6	1.6
Performance Chemicals [Member]
Summary of Segment depreciation and amortization
Depreciation	0.6	1.2	1.8	3.5
Amortization	0.3	0.3	1.0	1.0
Octane Additives [Member]
Summary of Segment depreciation and amortization
Depreciation	0.2	0.2	0.5	0.6
Amortization	0.2	0.3	0.5	0.8
Corporate [Member]
Summary of Segment depreciation and amortization
Depreciation	$ 0.4	$ 0.4	$ 1.2	$ 1.3