Reporting For Segments (Segment's Gross Profit And Reconciliations To Income Before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Other cost of sales	$ (185)	$ (1,842)	$ (768)	$ (2,220)
Total gross profit	77,640	78,454	148,275	153,407
Selling, general and administrative expenses	52,695	49,260	102,151	100,629
Restructuring and impairment charges	1,116	1,958	1,625	6,308
Other expense, net	5,719	8,142	10,959	14,746
Income before income taxes	18,110	19,094	33,540	31,724
Performance Coatings [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total gross profit	35,144	37,823	64,019	71,240
Performance Colors And Glass [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total gross profit	33,389	35,352	67,878	69,724
Pigments, Powders And Oxides [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total gross profit	$ 9,292	$ 7,121	$ 17,146	$ 14,663