Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Net sales	$ 423,663	$ 409,567	$ 1,243,463	$ 1,193,512
Cost of sales	304,806	295,498	893,083	861,011
Gross profit	118,857	114,069	350,380	332,501
Selling, general and administrative expenses	87,436	89,153	274,075	262,883
Net loss on sale of assets	0	53	100	21
Operating income	31,421	24,863	76,205	69,597
Interest expense, net	3,113	2,922	9,344	8,622
Other (income) expense, net	(21)	(64)	368	(288)
Earnings from continuing operations before income taxes	28,329	22,005	66,493	61,263
Income tax expense	9,634	7,221	22,752	21,269
Earnings from continuing operations	18,695	14,784	43,741	39,994
Earnings from discontinued operations, net of taxes	64	198	64	870
Gain on disposal of discontinued operations, net of taxes	420	0	420	0
Total earnings from discontinued operations, net of tax	484	198	484	870
Net earnings	$ 19,179	$ 14,982	$ 44,225	$ 40,864
Net earnings per share:
Basic earnings per share from continuing operations	$ 0.70	$ 0.56	$ 1.64	$ 1.52
Basic earnings per share from discontinued operations	$ 0.00	$ 0.01	$ 0.00	$ 0.03
Basic earnings per share from disposal of discontinued operations	$ 0.02	$ 0.00	$ 0.02	$ 0.00
Basic earnings per share	$ 0.72	$ 0.57	$ 1.66	$ 1.55
Diluted earnings per share from continuing operations	$ 0.68	$ 0.55	$ 1.61	$ 1.51
Diluted earnings per share from discontinued operations	$ 0.00	$ 0.01	$ 0.00	$ 0.03
Diluted earnings per share from disposal of discontinued operations	$ 0.02	$ 0.00	$ 0.02	$ 0.00
Diluted earnings per share	$ 0.70	$ 0.56	$ 1.63	$ 1.54
Average shares outstanding:
Basic (in shares)	26,770	26,455	26,721	26,380
Diluted (in shares)	27,233	26,623	27,062	26,540
Dividends declared per share	$ 0.16	$ 0.16	$ 0.48	$ 0.48