CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
NET SALES	$ 286,242,169	$ 244,870,731	$ 228,537,050
COST OF GOODS SOLD	189,881,444	161,328,280	148,031,073
GROSS MARGIN	96,360,725	83,542,451	80,505,977
OPERATING EXPENSES
Selling, general and administrative expenses	80,597,934	71,351,688	66,679,761
Acquisition related expenses		1,172,047
Total operating expenses	80,597,934	72,523,735	66,679,761
INCOME FROM OPERATIONS	15,762,791	11,018,716	13,826,216
OTHER INCOME AND (EXPENSES):
Interest expense	(943,154)	(688,502)	(650,873)
Gain on bargain purchase		601,975
Other - net	(78,455)	(116,665)	(87,924)
Total other - net	(1,021,609)	(203,192)	(738,797)
INCOME BEFORE INCOME TAXES	14,741,182	10,815,524	13,087,419
INCOME TAX EXPENSE	4,895,884	3,442,768	4,232,654
COMPREHENSIVE INCOME	$ 9,845,298	$ 7,372,756	$ 8,854,765
NET INCOME PER SHARE
Basic (in Dollars per share)	$ 1.30	$ 0.98	$ 1.18
Diluted (in Dollars per share)	$ 1.30	$ 0.98	$ 1.18
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING
Basic (in Shares)	7,544,936	7,517,364	7,503,494
Diluted (in Shares)	7,544,936	7,517,364	7,503,494