CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (UNAUDITED) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (UNAUDITED) [Abstract]
Sales	$ 317,979	$ 279,536
Cost of sales	245,662	211,997
Gross profit	72,317	67,539
Selling, general and administrative expenses	42,411	36,227
Acquisition expenses	0	7,318
Operating income	29,906	23,994
Interest income	190	31
Interest expense	(2,898)	(3,339)
Other income (expense), net	1,769	(460)
Earnings before income tax provision	28,967	20,226
Income tax provision	9,849	9,332
Net earnings	$ 19,118	$ 10,894
Net earnings per share:
Basic (in dollars per share)	$ 0.57	$ 0.35
Diluted (in dollars per share)	$ 0.56	$ 0.34
Dividends per share (in dollars per share)	$ 0.125	$ 0.125

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 59

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=6909708&loc=d3e1043-128460