Acquisitions (Tables)

3 Months Ended

Mar. 31, 2014

Business Combinations [Abstract]

Summary of pro-forma consolidated financial information

The following unaudited pro-forma summary presents consolidated financial information as if the U.S./Canada business of Comex had been acquired as of the beginning of each period presented. The pro-forma consolidated financial information does not necessarily reflect the actual results that would have occurred had the acquisitions taken place on January 1, 2013 or of future results of operations of these acquisitions under ownership and operation of the Company.

(Thousands of dollars except per share data)	Three Months Ended March 31,
	2014		2013
Net sales	$	2,366,556	$	2,274,871
Net income	115,457		102,810
Net income per common share:
Basic	$	1.16	$	1.00
Diluted	$	1.14	$	.98