Condensed Consolidated Statements of Income and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net sales	$ 197,290	$ 190,332	$ 577,180	$ 563,105
Cost of sales	144,561	142,543	419,089	416,732
Gross profit	52,729	47,789	158,091	146,373
Selling, general and administrative expenses	42,957	40,530	121,210	118,072
Operating income	9,772	7,259	36,881	28,301
Interest expense, net	1,194	1,264	3,328	3,655
Income before income taxes	8,578	5,995	33,553	24,646
Income tax expense	2,782	(1,219)	12,112	6,055
Net income	5,796	7,214	21,441	18,591
Comprehensive income	$ 8,722	$ 1,037	$ 25,772	$ 15,048
Income per common share:
Basic (in dollars per share)	$ 0.17	$ 0.21	$ 0.64	$ 0.53
Diluted (in dollars per share)	$ 0.17	$ 0.21	$ 0.63	$ 0.53
Dividends declared per share (in dollars per share)	$ 0.08	$ 0.07	$ 0.24	$ 0.21