Goodwill Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Goodwill Roll Forward
Goodwill, Beginning Balance	$ 58,152	$ 52,758
Goodwill, Acquired During Period	1,786	8,229
Goodwill, Translation Adjustments	(769)	(2,835)
Goodwill, Ending Balance	59,169	58,152
Metalworking Process Chemicals [Member]
Goodwill Roll Forward
Goodwill, Beginning Balance	50,071	44,677
Goodwill, Acquired During Period	1,786	8,229
Goodwill, Translation Adjustments	(769)	(2,835)
Goodwill, Ending Balance	51,088	50,071
Coatings [Member]
Goodwill Roll Forward
Goodwill, Beginning Balance	8,081	8,081
Goodwill, Acquired During Period	0	0
Goodwill, Translation Adjustments	0	0
Goodwill, Ending Balance	$ 8,081	$ 8,081