CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenue	$ 78,255,000	$ 66,660,000	$ 152,550,000	$ 127,245,000
Cost of sales	19,214,000	17,194,000	36,829,000	32,011,000
Gross Profit	59,041,000	49,466,000	115,721,000	95,234,000
Selling, general, and administration	50,054,000	40,210,000	96,684,000	77,777,000
Income from operations	8,987,000	9,256,000	19,037,000	17,457,000
Other income/(expense)
Interest income/ (expense), net	149,000	44,000	264,000	71,000
Other	6,000	(96,000)	122,000	(110,000)
Nonoperating Income (Expense), Total	155,000	(52,000)	386,000	(39,000)
Income before income taxes	9,142,000	9,204,000	19,423,000	17,418,000
Provision for income taxes	(3,198,000)	(3,666,000)	(7,121,000)	(6,979,000)
Net income	$ 5,944,000	$ 5,538,000	$ 12,302,000	$ 10,439,000
Basic earnings per share	$ 0.42	$ 0.40	$ 0.87	$ 0.75
Diluted earnings per share	$ 0.41	$ 0.38	$ 0.85	$ 0.71
Weighted average shares outstanding -
Basic	14,175,990	14,014,744	14,219,532	13,970,333
Diluted	14,461,316	14,742,033	14,489,759	14,666,398