SELECTED QUARTERLY DATA (Details) (USD $)	3 Months Ended								12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Net Revenue	$ 57,311,270	$ 60,016,344	$ 47,093,997	$ 53,102,594	$ 60,270,023	$ 44,653,284	$ 35,311,738	$ 39,482,921	$ 217,524,205	$ 179,717,966	$ 52,090,752
Gross Profit	21,501,677	22,475,339	16,389,485	18,908,732	21,108,373	17,039,509	12,332,826	13,139,327	79,275,233	63,620,035	30,952,200
Income (loss) from operation	14,587,684	15,862,008	10,195,755	13,279,563	12,488,666	12,124,854	7,872,756	9,625,155	53,925,010	42,111,431	24,926,621
Other income (expense)	(339,701)	(521,093)	(220,662)	(84,416)	131,934	(140,650)	(27,843)	(123,627)	(1,165,872)	(160,186)	157,653
Net income (loss)	$ 11,107,950	$ 12,374,361	$ 7,743,878	$ 10,731,636	$ 9,424,079	$ 9,472,745	$ 6,229,492	$ 7,787,785	$ 41,957,825	$ 32,914,101	$ 21,289,758
Earnings (loss) per shares - basic (in dollars per share)	$ 0.41	$ 0.46	$ 0.29	$ 0.40	$ 0.36	$ 0.37	$ 0.24	$ 0.30	$ 1.56	$ 1.27	$ 0.91
Earnings (loss) per shares - diluted (in dollars per share)	$ 0.41	$ 0.46	$ 0.29	$ 0.40	$ 0.38	$ 0.35	$ 0.24	$ 0.30	$ 1.56	$ 1.27	$ 0.91