Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Data (Unaudited) [Abstract]

(17) Quarterly Financial Data (Unaudited)

The following table sets forth unaudited quarterly financial data for 2011 and 2010:

Quarterly Financial Data (Unaudited)

	First		Second		Third		Fourth
(Millions of dollars, except per share data)	Quarter		Quarter		Quarter		Quarter

2011

Sales	$	194.4	$	226.8	$	231.7	$	279.3
Gross profit		46.2		57.4		53.9		69.0
Net earnings		12.4		18.5		14.4		20.7

Basic earnings per share		0.41		0.61		0.47		0.68
Diluted earnings per share		0.40		0.60		0.47		0.67

2010

Sales	$	127.1	$	152.9	$	172.1	$	193.5
Gross profit		28.6		37.3		43.3		49.2
Net earnings		6.0		10.6		12.6		14.3

Basic earnings per share		0.21		0.35		0.42		0.47
Diluted earnings per share		0.20		0.35		0.42		0.47

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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