Consolidated Statements of Operations (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements Of Operations
Net sales	$ 84,369,770	$ 73,301,864
Cost of goods sold	54,623,328	46,976,944
Gross profit	29,746,442	26,324,920
Selling, general and administrative expenses	24,385,922	22,039,956
Operating income	5,360,520	4,284,964
Interest:
Interest expense	(443,657)	(404,326)
Interest income	179,259	149,761
Interest expense, net	(264,398)	(254,565)
Other expense	(99,076)	(4,379)
Total other expense, net	(363,474)	(258,944)
Income before income tax expense	4,997,046	4,026,020
Income tax expense	1,447,815	1,214,827
Net income	$ 3,549,231	$ 2,811,193
Basic earnings per share	$ 1.14	$ 0.91
Diluted earnings per share	$ 1.13	$ 0.91